The Crime Branch of Delhi Police on Monday collected evidence using 3D laser scan technology in order to reconstruct for investigation the incident of fire at the building, in the Anaj Mandi area in Delhi that was engulfed in a blaze on Sunday killing 43 people.
A team from the Forensic Science Laboratory also visited the site and collected samples from the four-storey building that housed a number of illegal manufacturing units and had stored flammable raw material.
A Delhi court on Monday sent to 14-days police custody the property owner, Rehan, and manager of the building, Furkan.
Police had arrested the two and registered a case under sections 304 (culpable homicide not amounting to murder) and 285 (negligent conduct with respect to fire) of the IPC. The case was transferred to the Crime Branch.
The Delhi government had ordered a magisterial probe into the tragedy, the worst fire accident in the national capital since the 1997 Uphaar cinema blaze that claimed 59 lives, and sought a report within seven days.
It took over 150 firefighters nearly five hours to douse the blaze. As many as 63 people were pulled out of the building. While 43, including one minor, died, 16 were injured.