Panaji, Dec 3 (IANS): All trains passing through Goa's busiest railway station in Margao were Wednesday halted and scanned for explosives, after a note with a warning about a series of blasts was received by the station master.

Police sources said the note signed off as "Sevak" warned that "several trains passing through the Margao railway station would be targetted".

The note also said railway authorities should not treat it as a hoax.

Baban Ghadge, public relations officer of the Konkan Railway Corporation, which manages the Margao railway station, confirmed the threat.

"We have been checking trains from the morning. And the compartment checking procedure would be in place throughout the day," he said.

Police sources said two bomb squads were posted at the railway station and sniffer dogs were also deployed for the search operation.

"We are examining every compartment of each train passing through the station. The operation will continue till tomorrow (Thursday). We are not taking any chances," a police official said.