Fourteen people were killed and dozens badly injured when a fire broke out early Friday at a crowded music pub in eastern Thailand, police and rescue workers said. At least a dozen survivors were in critical condition.

Videos on social media showed thick black smoke and then flames pouring from the front entrance as people attempted to flee, some with their clothing on fire. Police said the fire was reported around 12:45 a.M.

The Mountain B pub in Sattahip district of Chonburi province, about 160 kilometers southeast of Bangkok, was lined with flammable soundproofing, and it took two hours for firefighters to put out the blaze, Manop Theprith of a private emergency rescue service group told Thailand's PPTV television news. His group said 40 people had been injured.

Several witnesses described seeing smoke and fire on the ceiling near the stage, followed by explosions.

Thirteen people died at the scene and another person with burns over 90% of his body died later, police, rescuers and Queen Sirikit Naval Hospital said.

The hospital said 15 patients required intubation, with most suffering third-degree burns over more than 60% of their bodies. Two patients were transferred to a hospital in Bangkok for advanced treatment.

“All the patients are considered to be in critical condition," said Capt. Anucha Likitvong, chief of the hospital's medical team.

“In a medical sense, the situation for patients suffering from this degree of burns can change sharply in the next 48 hours.”