When the train reached Mayyar railway station last night, some persons standing along the track, threw stones at the engine breaking the mirror of loco pilot cabin, they said.
After the incident, the driver informed railway officers and stopped the train at Satrod rail station.
Railway police said that on the complaint of train driver Ram Chander, a case under Section 152 (obstructing person from doing his duty and damaging of railway property) of the Railway Act has been registered against unidentified persons.