Four unknown men, suspected to belong to the coal mafia, attacked a constable attached to a flying squad of the regional transport office (RTO) in the wee hours of Friday morning after he seized a coal-carrying truck. The constable, identified as Pravin Bhoir, was carrying out surprise checks on vehicles along with other RTO officials, on the Western Express Highway near Agripada junction in Santacruz on Friday.

A 20-member squad stopped six coal trucks for overloading. The authorities asked the drivers of the trucks to pay the fine but they refused to do so. It was then that the officials told them that the trucks would be seized and taken to the Andheri RTO.