The caller switched off his mobile phone as police tried to track down the phone.
Mumbai Police received a call claiming the arrival of three 'terrorists' with Pakistan links in the metropolis which turned out to be a hoax call, officials said on Saturday.
Police stepped up vigil and questioned a man from Beed district, but the caller is yet to be traced, they said.
The call was received by the police's main control room at 12.05 pm on April 7. The caller identified himself as Raja Thonge and said he was speaking from Pune, an official said. The caller told police that three terrorists from Dubai with a Pakistan connection sneaked into Mumbai in the early hours (on Friday), the official said.
The caller told the police that the "terrorist" trio was involved in illegal activities and also provided the registration number of the vehicle they are purportedly using, he said.
"Police increased vigil after receiving the call. Apart from teams of local police, the crime branch was also roped in for investigation," the official said.
Meanwhile, the caller switched off his mobile phone after some time as police tried to track down the phone number, which was found to be registered in the name of a man from Ashti in Beed district, the official said.
A police team went to Ashti and questioned the man who claimed the phone number from which the call was made didn't belong to him and that he didn't know about any terrorists.
"Nothing suspicious was found after verification and the call was declared a hoax," the official added.
A case was registered against unidentified persons for providing false information under sections 505 (1), 505 (2), and 182 of the Indian Penal Code (IPC) at Azad Maidan police station in south Mumbai. A search is on for the caller, the official said.
Mumbai witnessed deadly terror attack when ten Pakistani terrorists struck on November 26, 2008, killing 166 people and injuring more than 300 in four days, before nine of them were shot dead.
(Except for the headline, this story has not been edited by NDTV staff and is published from a syndicated feed.)