DHAKA, BANGLADESH - BLASTS at a multi-storey hotel in the Bangladesh capital Dhaka injured more than 30 people, police said on Monday.

They said two explosions rocked the nine-storey Orchard Plaza hotel at the city's Nayapaltal area late on Sunday night, setting two upper floors on fire.

Fire fighters said the victims included one Sri Lankan national. They said the fire was apparently caused by 'gas explosions.' 'It's not a bomb,' one fire official told reporters.

'We are investigating the incident,' a police officer said.

The injured were being treated at hospitals for multiple burn injuries.

'We are checking the whole place. Bomb or gas, it's a serious incident and we taking it seriously from security point of view,' said a senior police officer on the scene.

In recent years Bangladesh has been repeatedly hit by bomb blasts, mostly blamed on Islamist militants, which have killed dozens of people and injured hundreds. -- REUTERS