Bangkok bar fire kills 30, negligence investigation launched.

A deadly fire at a bar in Thailand has left at least 30 people dead, with authorities investigating whether safety failures contributed to the tragedy.

The blaze broke out late on Sunday. Police said the use of flammable decorative materials may have accelerated the spread of the fire, which started near the stage.

This indicates a lack of caution and disregard for the safety of patrons, Police General Kittiratt Phanphet said on Monday.

An initial assessment by disaster management officials found that an electrical short circuit in a ceiling-mounted air conditioner caused the fire, which quickly cut power throughout the venue. Firefighters brought the blaze under control after about 30 minutes.

First responders discovered many of the victims trapped in windowless bathrooms near one of the rear exits. Investigators believe they were attempting to escape but were unable to do so, according to Kittiratt.

As of Tuesday morning, authorities had confirmed the identities of 27 of the 30 victims, while three remained unidentified. More than 70 people are still hospitalized, including 24 in critical condition, according to Bangkok city officials.

Among the injured, 24 remain in critical condition, 15 suffered moderate injuries, and 36 sustained minor injuries and have since been discharged.

The bar owner expressed his "deepest apologies for this tragic incident" and said the establishment would fully cooperate with the investigation into possible negligence.

Police are also investigating whether emergency exits were blocked or difficult to access. A customer who visited the bar in May said she had to follow a "winding route" to reach the restroom and noted that the emergency exits were poorly marked. Investigators also found that access to another exit near the kitchen may have been partially obstructed by shelving units and lockers.