A fire tore through a Thai nightclub early Friday killing at least 13 people and injuring 40, a rescue services official said.

The blaze broke out around 1:00 am at the Mountain B nightspot in Chonburi province’s Sattahip district, about 150 km south of Bangkok. Video footage posted by the rescue service showed desperate revellers fleeing the club screaming, their clothes ablaze, as a huge fire rages in the background.

The dead - 4 women and 9 men - were found mostly crowded by the entrance and in the bathroom, their bodies severely burned, the service said. All the victims are believed to be Thai.