According to the police, a fatally injured person was admitted to hospital at Barasat last night after he fell off a running train.
The police were trying to identify the body and suspected it to be one of the two Bangladesh undertrials who escaped from Presidency Jail.
The two prisoners, Mohammad Sabuj and Mohammad Ali Ahmed, were arrested in May under the Foreigners Act.
The two, engaged in sweeping, scaled the wall from the backyard of the jail kitchen and went missing.