BAGHDAD — The death toll from a massive fire at a Baghdad hospital for coronavirus patients rose to 82 Sunday as anxious families searched for missing relatives and the government suspended key health officials for alleged negligence.

The flames, described by one witness as “volcanoes of fire,” swept through the intensive care unit of the Ibn al-Khatib Hospital, which tends exclusively to COVID-19 patients with severe symptoms. Officials said the blaze, which also injured 110 people, was set off by an exploding oxygen cylinder.

Nurse Maher Ahmed was called to the scene late Saturday to help evacuate patients.

“I could not have imagined it would be a massive blaze like that,” he said. The flames overwhelmed the hospital’s second floor isolation hall within three to four minutes of the oxygen cylinder exploding, he said. “Volcanoes of fire.”

Most of those killed suffered severe burns, he said. Others were overcome by smoke, unwilling to leave behind relatives hooked up to ventilators. Ahmed said the patients could not be moved. “They would have minutes to live without oxygen.”

He said he and others watched helplessly as one patient struggled to breathe amid the smoke.

At the Vatican, Pope Francis, who concluded a historic trip to Iraq last month, remembered those who perished in the blaze. Addressing people gathered in St. Peter’s Square for his customary Sunday appearance, Francis mentioned the news of the dead. “Let’s pray for them,” he said.

Widespread negligence on the part of health officials is to blame for the fire, Iraq’s prime minister, Mustafa al-Kadhimi, said Sunday. Following a special cabinet meeting to discuss the blaze, the government suspended key officials, including the health minister and the governor of Baghdad province. Other officials, including the hospital director, were dismissed from their posts.

It took firefighters and civil defense teams until early Sunday to put out the flames.

Among the dead were at least 28 patients on ventilators, tweeted Ali al-Bayati, a spokesman of the country’s independent Human Rights Commission, a semi-official body.

Paramedics carried the bodies, many burned beyond recognition, to al-Zafaraniya Hospital, where Ahmed said forensics teams will attempt to identify them by matching DNA samples to relatives.

By midday Sunday, relatives were still searching anxiously for loved ones.

“Please, two of my relatives are missing. … I am going to die (without news about them),” posted a young woman on social media after a fruitless search for her family members. “I hope someone can help us find Sadi Abdul Kareem and Samir Abdul Kareem, they were in the ICU.”

Roky Kareem, 30, was looking frantically for his friend Riyam Rahman, a pharmacist, who was visiting her mother at the hospital. Riyam’s mother, Basima was admitted to Ibh al-Khatib 45 days ago with complications from COVID-19.

“All we know is they were in the room next to where the fire started,” he said. “Her phone is switched off, and her family has gone to every hospital trying to find them.”

The fire happened as Iraq grapples with a severe second wave of the coronavirus pandemic. Daily virus cases now average around 8,000, the highest level since Iraq began recording infection rates early last year. At least 15,200 people have died of coronavirus in Iraq among at least 100,000 confirmed cases.

The prime minster convened the special cabinet session hours after the flames broke out. In addition to suspending the health minister, Hasan al-Tamimi, and Baghdad’s governor, the cabinet ordered an investigation of the health minister and key hospital officials responsible for overseeing safety measures.

The cabinet also fired the director-general of the Baghdad health department in the al-Rusafa area, where the hospital is located, and the hospital’s director of engineering and maintenance, according to a statement from the Health Ministry and the prime minister’s office.

“Negligence in such matters is not a mistake, but a crime for which all negligent parties must bear responsibility,” al-Kadhimi said Sunday after a meeting.

The United Nations envoy to Iraq, Jeannine Hennis-Plasschaert, expressed “shock and pain” over the fire in a statement and called for stronger protection measures in hospitals.

Associated Press Writer Abdulrahman Zeyad contributed to this report.