Charred human remains were found on May 14 on the second floor of the building in outer Delhi's Mundka area where a massive fire broke out on May 13, Delhi Fire Service (DFS) officials said.
It is suspected that an explosion in an AC may have triggered the fire, DFS Director Atul Garg said.
27 people have died so far in the blaze that ripped through the four-storey building on Friday. The fire started on the first floor that houses the office of a CCTV camera and router manufacturing and assembling company, the police have said.