The death toll from a huge fire in a Bangkok music bar has increased to 30, officials said Tuesday, as the investigation into the blaze proceeded while relatives of the victims took on the grim task of identifying their loved ones and retrieving their bodies.

More than 70 people were injured in the Sunday night tragedy, with 24 of them still in critical condition, according to a statement by the Bangkok Metropolitan Administration.

Initial details about the victims, which have not been updated since Monday, said 18 of the dead were women and nine were men, all Thai except one bar employee from Laos. The injured included 41 women and 34 men.

The blaze at the Rong Beer Na Ladprao bar, the city’s deadliest in 17 years, broke out shortly before midnight in a northern part of the Thai capital. Firefighters needed half an hour to bring it under control.

The bar, which in Thai calls itself a brewery or beer hall, claimed to accommodate as many as 600 customers. It was not clear how many were present Sunday night.

An investigation into the cause of the fire and whether the bar was following safety regulations is ongoing. Most of the people who were killed were found trapped in windowless bathrooms where they may have sought to escape the flames, police said.

Bangkok governor orders safety survey and better enforcement

Bangkok Governor Chadchart Sittipunt said Tuesday he has ordered the city’s administration to conduct a sweeping survey of such establishments to assess risks. The city will also step up enforcement of existing laws to improve safety standards, he said.

Former patrons of the bar and other mourners visited the site Tuesday, adding to the growing pile of flowers leaning on the guardrails cordoning off the location of the blaze.

Handwritten messages in Thai and other languages, including Korean, were left alongside white flowers, expressing condolences to the victims.

Debris from the bar, including melted musical instruments and blackened chairs, lay scattered along the sidewalk, moved there Monday by officials investigating the cause of the fire.

University student Thanakon Phoklang said he was passing by and wanted to pay his respects.

“It was regrettable,” he said. “It’s impossible to feel anything else.”

The public clamor for answers and action concerning the tragedy has included relatives of the dead who went to Bangkok’s Institute of Forensic Medicine to collect their bodies on Tuesday.

Families weep as they retrieve bodies

Gathering at a loading area for vehicles, family members wept as they walked with coffins that were then loaded into an ambulance and taken away.

Namthip Tubsuk, a mother of two and teacher nicknamed “Ice,” died in the fire, according to her aunt Jittiya Phaiklaw, who focused on reports alleging exit doors had been locked.

“They shouldn’t have locked the doors,” Jittiya said. “If they were afraid the customers would get away, they could have had the security guard staff minding them away.

Jutatip Surakumhang, a friend of Namthip, said an apology was owed.

“I feel there must be someone coming out to apologize to everyone who died. There were deaths deserving an apology. It was heartbreaking,” Jutatip said.

The bar issued an apology and condolences Monday on Facebook and vowed to cooperate with investigations into the fire.

The relatives and friends of another deceased victim, 35-year-old Bangkok native Top Sarobol, also came to the forensic institute to accompany his body. They wept as his coffin was brought out and loaded into the van to be returned home.

“For his family, it is hard to accept it. His grandmother is old. She always said let her grandson cremate her,” his friend Nuttakarn Sevoy said. “But the reality is opposite of what we wanted.”

Speculation about the causes of the tragedy has been rampant but mostly unconfirmed, while experts have drawn general conclusions about fire safety in Thailand.

Engineering expert suggests problems should be probed

On Monday, the president of the Thailand Structural Engineers Association, Amorn Pimanmas, told reporters outside the bar that, while he had not inspected the venue, he observed some risk factors that could worsen fire hazards.

He said the building is enclosed, has low ceilings and may have used foam as decorative materials, without adequate flame-retardant treatment.

Combined with limited air ventilation, smoke would accumulate quickly, he said, creating toxic air that could be the main cause of death for many victims.

He also noted that officials said the bar was licensed as a restaurant with a live music venue rather than an entertainment venue because it was located outside the designated zoning for such businesses.

Amorn said that would exclude it from the stricter fire safety requirements for entertainment venues.

“There must be some kind of revolution regarding fire safety procedures, and I think law enforcement is also very important,” he said.

“It’s not that we don’t have the law, but it’s the problem of how the law could be strictly enforced from now on. I think the government should answer this question.”

AP