The police van was returning to Gorakhpur district jail after producing two undertrials Bharat Kumar and Ram Milan before the court of judicial magistrate in Bansgaon this afternoon, a police spokesman said.
Police said that near Yami river, the van lost control and fell into the drain in which undertrial Bharat Kumar, constable Radhey Shyam Rai and constable Awadhesh Kumar Yadav were killed.
Driver constable Sachidanand, constable Gaurishanker and an undertrial Ram Milan were injured and were taken to a hospital where Sachidanand and Ram Milan succumbed.