At least 27 people have been killed in a huge fire which ravaged through a Bangkok bar, Thai media has reported.

Firefighters were called to the scene just after midnight and discovered patrons fleeing through the flame-enveloped front door of the venue.

Unverified footage shows flames blasting out of the bar as one woman falls to the floor before getting to her feet to get away.

Thailand’s Prime Minister Anutin Charnvirakul told journalists at the scene that 27 people died and several have been taken to the hospital, according to local media. He stressed the cause of the fire was still under investigation.

The bar is located in the Chatuchak District and is a famous entertainment venue and restaurant in the area, Thai outlet the Daily News reported, external.

Firefighters were able to bring the flames under control in half an hour.

Pictures taken inside the bar after the fire was put out show it completely charred and blackened, with the ceiling peeling off.

A number of people are still missing after the disaster, Thai outlet Thairath reported, external.

This is a breaking story. More updates will follow.