new delhi, Nov. 7 -- The contractors overseeing construction of the building that collapsed in Old Delhi's Chawri Bazar on Thursday, killing at least two people, allegedly ignored workers' warnings about poor-quality construction material and the structure's inability to support another concrete slab, according to the first information report (FIR) registered in the incident. Police arrested three contractors in connection with the collapse early on Friday. Deputy commissioner of police (central) Rohit Rajbir Singh identified the accused as Siraj, Tajuddin and Furkan, all residents of the Ajmeri Gate area. They were arrested from Sirohi village in Faridabad's Dauj tehsil. Their full names were not immediately available. In his complaint, Fi...