The body of 45-year-old Yam Prasad Banjade alias Hemraj, a person of Nepali origin, whom the police suspected as having fatally stabbed the girl, was surprisingly found by a former police official who went to the terrace after breaking open a lock on the door upstairs.

"Since we have found the body of Hemraj from the roof top of the same house, our line of investigation has changed," Noida Superintendent of Police Mahesh Kumar Sharma said.

He said the police is now investigating whether any third person is involved. They were trying to find out whether Hemraj had committed suicide or if there was any foul play.

UP DGP Vikram Singh admitted to bungling on the part of local police in failing to locate the body.

Promising thorough investigation, he said there were three or four possibilities including murder of Hemraj but he would not like to get into a discussion on them. It all depends on the post-mortem report, which he expected in a few hours, and the contents of the viscera.

On Friday, the police found the body of Aarushi Talwar, a student of DPS School, Noida in a pool of blood with multiple stab wounds.