A day labourer was killed and three others were injured in a wall collapse at Ghoshpara in Sadar upazila Sunday afternoon. The dead was identified as Kader Sheikh, 40, of Govindia village in the upazila. The injured are Anwar Dhali, 40, Shahidullah Gazi, 40, and Khalil Khan, 50. Locals said the four were working on a road at around 4:00pm. Suddenly, the roadside wall collapsed on the labourers, leaving them seriously injured. They were taken to Chandpur General Hospital where Kader succumbed to his injuries soon after admission.