Shubham, a resident of Ganga Vihar Colony, went missing on Monday after two of his friends, Sonu and Aditya, asked him to meet them, SHO (Murad Nagar) Har Dayal Singh Yadav said.
The body has three bullet injuries, all on the chest, and has been sent for postmorten, he said, adding the accused have been booked for murder.
The Murad Nagar police station is probing the case.