In a move that may spell trouble for MNS president Raj Thackeray, Government Railway Police (GRP) have approached a Kalyan court, seeking cancellation of the bail granted to him in a case related to his party's violent agitation against north Indians in 2008.

"The Kalyan Railway Police have moved the Railway court seeking cancellation of bail and the next date of hearing is March 1," said M D Pawar, Assistant Commissioner of GRP.