On December 15, four labourers engaged in repair work of a building at Sam Seth lane in the Zaveri Bazar area were killed when the building's slab collapsed.
Police said that the contractor repairing the Dhanji Mulji building tried to demolish some part of the building which led to the collapse.
Sharad Naik, Senior Inspector of LT Marg police station said investigations had revealed that the contractor and site supervisor did not take steps for the safety of the workers.