President Donald Trump said his administration will decide which oil companies are allowed to operate in Venezuela, as he met oil executives at the White House less than a week after the US abduction of Venezuela’s president.

Tragedy brought people together in Crans-Montana and brought the country to a standstill.

On Friday, just down the road from the bar where 40 young people were killed by fire on New Year’s Eve, church bells rang in their memory.

They tolled right across Switzerland, to mark a national day of mourning.

Then, moments after the last notes of a special memorial service had faded, came the news that one of the bar’s owners had been detained.

Swiss prosecutors said Jacques Moretti, a French national, was a potential flight risk. He and his wife Jessica, who is also French, are suspected of manslaughter by negligence, bodily harm by negligence and arson by negligence.

Many of the victims’ families had demanded action like this from the start: more than a week after the fire, the anger in this community has been increasing.

At the main ceremony in Martigny, down in the valley, relatives of the dead were joined by survivors. Some had come from hospital for the memorial. People held white roses in their laps and gripped each other’s hands for support.

“The images we faced were unbearable. A scene worse than a nightmare. Screams ringing out in the icy cold, the smell of burning. It was apocalyptic,” a young woman called Marie told the audience.

She had been in a bar opposite Le Constellation when the fire broke out and suddenly found herself helping the injured as they ran from the flames.

She said she would never forget what she’d seen.

Listening in the front row were the presidents of France and Italy, whose citizens were among those killed and injured in the fire. Both countries have opened their own investigations.

Back in Rome, Italy’s prime minister vowed to make sure all those responsible were identified.

“This was no accident. It was the result of too many people who did not do their jobs,” Giorgia Meloni said.

She wants to know why the music wasn’t cut as soon as the fire started.

“Why did no-one tell the young people to get out? Why did the council not make the proper checks? There are too many whys.”

In Crans-Montana people have the same questions and many more.

For now, the only two formal suspects are the co-owners of Le Constellation, Jacques and Jessica Moretti. Early on Friday, the pair were called in by prosecutors. They are being investigated for causing death and injury through negligence but have not been charged.

Now Jacques Moretti has been remanded in custody. In a statement, the public ministry said the move followed a “new assessment of the flight risk.”

“I constantly think of the victims and of the people who are struggling,” his wife told a crush of TV cameras after several hours of questioning at the ministry.

It was her first public comment since the fire.

“It is an unimaginable tragedy. It happened in our establishment, and I would like to apologise.”

Nine days on, Le Constellation is still obscured from view behind white plastic sheets. A lone policeman stands guard, his face covered against the relentless snow.

What unfolded inside the building’s basement has gradually become clearer – and it’s the story of a disaster that should never have happened.

Mobile phone footage shows a sparkler tied to a champagne bottle apparently starting the fire as it brushes the ceiling. Covered with soundproofing foam that was never safety tested, it ignites quickly.

When the crowd eventually rush for the exit in panic, there is a crush on the stairs. It seems the emergency doors were blocked.

But another video, from six years ago, suggests the risk was well known. On the footage, a waiter can be heard warning that the material on the ceiling is flammable.

“Be careful with the foam,” the voice shouts, as people wave the same sparklers.

But the questions here are not just for the owners.

This week the local authorities in Crans made the shocking admission that they hadn’t carried out mandatory safety checks of the bar for five years.

They offered no explanation.

“It was a hell inside that bar. More than 1,000 degrees of temperature. There was no way to escape,” Italy’s ambassador to Switzerland, Gian Lorenzo Cornado, told the BBC, citing a long list of safety violations.

Six Italians were killed as a result.

“Italy wants justice, the Italian government wants justice and the Italian people want justice, for sure. The families want justice,” the ambassador stressed.

That includes for those with life-changing injuries.

The regional hospital in Sion took the first major influx of patients. The stress was compounded by the fact that many doctors’ own children were partying in Crans for the New Year.

“They were all scared the next stretcher to arrive would be carrying their own child,” hospital director Eric Bonvin remembers.

But he’s proud of how his team coped.

Some casualties were unconscious and so badly burned, it took time to identify them.

The most serious cases were moved to specialist burns centres elsewhere in Switzerland and in Europe where some are still in a critical condition.

All face a long, tough path to recovery which the doctor likens to a “rebirth” because many of his young patients have severe burns to the face.

“First the body needs to be protected, like the foetus in a mother’s womb. That’s what’s happening for many now. Then they will have to re-enter the world and find their identity,” Professor Bonvin says.

“It will take a lot of work and resilience.”

Add to that the anguish of surviving.

“They came round and at first they felt lucky to be alive. But some now feel this guilt, wondering why they are here, but not their friend or brother,” Bonvin explains.

“It is a delicate moment.”

In central Crans, the heap of tributes for the dead is still growing, protected from the elements by a canvas.

After leaving their own fresh flowers on Friday, many people then stood in front of the ruins of the bar itself for a moment. Remembering, in silence.

United States President Donald Trump has called on oil executives to rush back into Venezuela as the White House looks to quickly secure $100bn in investments to revive the country’s ability to fully tap into its expansive reserves of petroleum.

Trump, as he opened the meeting with oil industry executives on Friday, sought to assure them that they need not be sceptical of quickly investing in and, in some cases, returning to the South American country with a history of state asset seizures as well as ongoing US sanctions and the current political uncertainty.

“You have total safety,” Trump told the executives. “You’re dealing with us directly and not dealing with Venezuela at all. We don’t want you to deal with Venezuela.”

Trump added: “Our giant oil companies will be spending at least $100bn of their money, not the government’s money. They don’t need government money. But they need government protection.”

Trump welcomed the oil executives to the White House after US forces earlier on Friday seized their fifth tanker over the past month that has been linked to Venezuelan oil. The action reflected the determination of the US to fully control the exporting, refining and production of Venezuelan petroleum, a sign of the Trump administration’s plans for ongoing involvement in the sector as it seeks commitments from private companies.

“At least 100 Billion Dollars will be invested by BIG OIL, all of whom I will be meeting with today at The White House,” Trump said on Friday in a predawn social media post.

The White House said it invited oil executives from 17 companies, including Chevron, which still operates in Venezuela, as well as ExxonMobil and ConocoPhillips, which both had oil projects in the country that were lost as part of a 2007 nationalisation of private businesses under former President Nicolas Maduro’s predecessor, Hugo Chavez.

“If we look at the commercial constructs and frameworks in place today in Venezuela, today it’s un-investable,” said Darren Woods, ExxonMobil CEO. “And so significant changes have to be made to those commercial frameworks, the legal system, there has to be durable investment protections and there has to be change to the hydrocarbon laws in the country.”

Benjamin Radd, a senior fellow at the UCLA Burkle Center for International Relations, told Al Jazeera that he had “noted the hesitation and less-than-full-throated enthusiasm for re-entering the Venezuelan market”, citing Woods, who told the gathering that the company had its assets there seized twice already.

“The bottom line is that until Trump can outline and provide assurances of a plan towards political stability, it will continue to be a risky endeavour for these oil companies to re-engage Venezuela. And what is there is a regime change in Iran in the days or weeks or months to come, and all of a sudden that re-emerges as a place where Western oil companies can do business? Even though the reserves don’t equal what Venezuela has, the risk is far less, and the infrastructure is more sound,” Radd said.

Other companies invited included Halliburton, Valero, Marathon, Shell, Singapore-based Trafigura, Italy-based Eni and Spain-based Repsol, as well as a vast swath of domestic and international companies with interests ranging from construction to the commodity markets.

Wait and see

Large US oil companies have so far largely refrained from affirming investments in Venezuela, as contracts and guarantees need to be in place. Trump has suggested that the US would help to backstop any investments.

Venezuela’s oil production has slumped below one million barrels per day (bpd). Part of Trump’s challenge to turn that around will be to convince oil companies that his administration has a stable relationship with Venezuela’s interim President Delcy Rodriguez, as well as protections for companies entering the market.

While Rodriguez has publicly denounced Trump and the abduction and ouster of Maduro, the US president has said that to date, Venezuela’s interim leader has been cooperating behind the scenes with his administration.

Most companies are in a wait-and-see mode as they await terms from the Venezuelans, stability and wait to find out how much the US government will actually help, said Rachel Ziemba, an adjunct senior fellow at the Center for a New American Security.

Those like Chevron that are already in there are in a better position to increase investments as they “already have sunk costs”, Ziemba pointed out.

Ziemba said she expects a partial ramp-up in the first half of this year as the volumes that were going to China – Venezuelan oil’s largest buyer – are redirected and sold via the US. “But long-term investments will be slow,” she said as companies wait to find out about US commitments and Venezuelan terms.

Tyson Slocum, director of the consumer advocacy group Public Citizen’s energy programme, criticised the gathering and called the US military’s removal of Maduro “violent imperialism”. Slocum added that Trump’s goal appears to be to “hand billionaires control over Venezuela’s oil”.

So far, the US government has not said how the revenue from the sale of Venezuelan oil will be shared and what percentage of the sales would be given to Caracas.

Ziemba said she was worried that “if funds do not go to Venezuela for basic goods, among other local needs, there will be instability that will deepen the country’s economic crisis“.

In the news conference on Friday, Trump said the US had a formula for distributing payments. UCLA’s Radd said that “if the US can or will guarantee security and stability, it makes sense for it to expect a return on investment in that sense. But then this makes it sound more like a mafia-style ‘racket’ than a government-led operation”, he told Al Jazeera.

Meanwhile, the US and Venezuelan governments said on Friday they were exploring the possibility of restoring diplomatic relations between the two countries, and a delegation from the Trump administration arrived in the South American nation on Friday.