Security has been tightened at railway stations in the State following the blasts in Mumbai on Wednesday. According to a press note issued here, the order for enhanced security measures was issued by Deepak Krishan, General Manager, Southern Railway. The Railway Protection Force would also utilise the services of sniffer dogs. Luggage scanners would also be used. Passengers are requested not to handle any unclaimed baggage found in the stations, the press note added.