NEW DELHI -- The Indian financial capital Mumbai lived a day of high tension Sunday as the city's railway stations received a phone call threatening bombing attacks and fishermen reported seeing two mysterious speedboats off the coast of the city.

The Coast Guard and Mumbai Police were put on alert after fishermen reported sighting two unidentified speed-boats Sunday afternoon off the north Mumbai coast, the Indo-Asian News Service reported quoting an official source.

Some fishermen saw the mysterious speedboats around 110 kilometers to the north near Tarapur, "where sensitive installations of national importance are located," said the report.
The Police in Mumbai Sunday also staged a research operations in the city's railway stations after receiving a phone call threatening to blow up four train stations of the city.
The Police said nothing substantial has been found and the threat call could be a hoix.
Indian intelligence think that it is a rumour.but the people of mumbai is vary afraid of this threat and the mumbai police are taking more steps.