Mandal had removed the walls of rooms on the ground floor, and pillars along with them. The structure was supported by iron rods. File pic

Parksite cops have arrested the 'architect'-cum-contractor, who planned and executed the renovation of Siddhi Sai building, which fell on July 25, claiming 17 lives. Police arrested Anil Mandal (28) on Saturday night, after his active involvement was revealed. He was produced in Bhoiwada holiday court on Sunday, which remanded him in police custody till August 2. An investigation has revealed that Mandal doesn't hold any architectural qualification, and was working on directions of Sunil Shitap, who owned the flats on the ground floor.