Kolkata: An unidentified youth, who is suspected to be mental challenged, died after he came in contact with an overhead wire of train.Locals spotted the victim on the roof of UP Canning local after it arrived at Sealdah station on Tuesday morning. According to the railway police, the victim was electrocuted when the train was about the enter platform at Sealdah station. The incident triggered tension among the commuters at the station at around 7 am. The incident also led to the disruption of train services in the Sealdah South section for sometime. Also Read – Heavy rain hits traffic, flightsThe railway police later recovered the body from the roof of the train after switching off the power connection in the overhead wire. According to police, the victim, whose identity is yet to be confirmed, climbed up to the roof after the train reached Ballygunge station. He was walking on the roof of the moving train. When the train arrived at the Park Circus station, some of the passengers urged the victim to get down from the roof. But he did not pay any attention to their appeal. Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killedHe sat on the roof of the moving train. He was alive when the train then left Park Circus station. As the train was about to enter Sealdah station, the victim came in contact with the overhead wire and got electrocuted.The victim was brought down and sent to NRS Medical College and Hospital where he was declared brought dead. Police have started a probe to ascertain the identity of the victim. According to the preliminary investigation, police suspect that the victim was mentally challenged.