A schoolboy was killed when a portion of a wall collapsed on him on a road near Azimpur Westin School in the city on Tuesday. The deceased was identified as Zihad, 7, a class one student of a school in Azimpur and son of betel nut seller Nazir Hossain of Nawabganj upazila. Read: SSC examinee hacked to death in Chudanga Inspector Mohammad Bachchu Mia, in-charge of Dhaka Medical College and Hospital (DMCH) police outpost, said a portion of a concrete wall fell on Zihad while he was going to school with his father, leaving him critically injured. Later, he was taken to DMCH where doctors declared him dead.