A Delhi-bound IndiGo aircraft from Mumbai was diverted to Ahmedabad after receiving a bomb threat, which later turned out to be a hoax, an official said on Wednesday.

Soon after the flight took-off from Mumbai on Tuesday night, an unidentified person, through a tweet, claimed a bomb had been placed in the aircraft which was carrying nearly 200 passengers and crew, the official from the Sardar Vallabhbhai Patel International Airport here said.

After being alerted by the Mumbai ATC, the pilots decided to make an emergency landing at Ahmedabad airport, which was the closest airport when the flight was en-route to Delhi, said the official.