Mumbai/IBNS: An anonymous caller warned Mumbai Police of serial blasts in the city last evening, officials informed on Sunday.

"Mumbai Police Control received a threat call on Saturday evening, around 6. The caller claimed that there would be serial blasts in Mumbai before hanging up," an official told the media on Sunday.

The police swung into action and carried out searches at several key public locations and installations across the city.

However, no explosive devices or anything suspicious was found in the search.

"Police are currently trying to find out the details of the caller," the official told the media.

Earlier on Dec 27, the Jaipur airport authority received an email where the sender threatened to blow up the airport.