Kolkata, Aug. 18 -- A mysterious late-night explosion outside Madhyamgram High School in North 24 Parganas district, West Bengal, killed a man, identified as Sachchidananda Mishra, a resident of Uttar Pradesh, police said. Sources said the incident took place around midnight yesterday in front of the school's main gate, near Madhyamgram railway station. Mishra was reportedly walking with a bag when it suddenly exploded in his hands. Preliminary suspicion suggests that the bag might have contained explosives. Severely injured in the blast, Mishra was rushed to Barasat Medical College Hospital and later shifted to a Kolkata hospital after his condition worsened. However, he succumbed to his injuries this morning. Following the incident, polic...