An Air India flight was forced to make an emergency landing today after a bomb threat - less than 24 hours after the Ahmedabad air disaster.

Flight AI 379 was travelling from Thailand's Phuket to India's capital New Delhi but had to suddenly land again after an explosion warning, airport authorities said.

The plane took off, circled the west coast of the island and then landed again minutes later on the holiday island.

Passengers were evacuated from the plane in line with emergency plans, an Airports of Thailand official said.

There were 156 passengers on the flight and the bomb threat was received on board the plane, it said in a statement.