Mumbai, India's financial capital, has been placed on alert after a threat to attack the city to avenge Israel's offensive in Gaza, the Times of India reported.
The threat was in the form of an anonymous letter addressed to Mumbai police commissioner Rakesh Maria last week.
"We will take revenge for Gaza," said the one-page, well-typed letter in English, which claimed to be from the Indian Mujahideen.
"Maria, you were lucky in 1993 to have escaped the wrath but this time you will not. Now we are going to carry a blast and it is a challenge for you if you can stop, stop it."
On March 12, 1993, Mumbai was rocked by a series of blasts which killed 257 people and injured 713. Then-deputy commissioner of police Maria rounded up many members of the Dawood Ibrahim gang responsible for the blasts.
Police claimed at the time that the attackers had used explosives and grenades provided by the Inter-Services Intelligence (ISI) of Pakistan.
Maria confirmed receipt of the letter and said police were trying to ascertain its authenticity. He added that police were taking all necessary precautions in a city that has been at the receiving end of terrorist attacks several times.
"We are not taking any chance. All police stations, crime branch units and ancillary branches have been alerted," Maria said.
The Mumbai Police have sounded a high alert, particularly in view of upcoming religious festivals like Eid and Ganesh Chatturthi.
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