India, Aug. 18 -- A man from Uttar Pradesh, who worked at a Haryana factory, died at a hospital in West Bengal's North 24 Parganas district on Monday, hours after he was critically injured in an explosion outside a school 20 km north of Kolkata.

The family of the man, Sachidananda Mishra, claimed he worked at the Haryana factory until two days ago, and they had no idea how he reached Bengal, a police officer said. "The man was apparently sitting on a roadside bench near the school late on Sunday night. He was carrying something in a bag that exploded around 1am, wounding him critically. Some wires, batteries, and a packet of food were found at the spot," the officer said.

The officer said Mishra gave his father's phone number to the loc...