The Mumbai city has been put on alert after the Indian Coast Guard sent a fax to Mumbai Police and other security agencies on Monday regarding an attempt of infiltration.
The intel input was about three ISIS terrorists trying to gain access to the city via sea route.
The Coast Guard had been long tracking developments in the case.
A senior Mumbai Police official said, "The information is received from the Coast Guard through fax. We are taking all necessary precautions and getting details about the suspects from the information provided to us."
All security agencies are now verifying the information and working to rule out any such attempt.