Police suspect the role of three-four persons in this incident which appeared to have taken place during early hours.
The incident came to light when father of the security guard, identified as Sahil (22), went to the ATM site at around 7:30 AM as his son did not return home upon ending duty hours, police said.
He found his son lying dead at the site and informed police about the incident.
However, they broke the CCTV cameras installed at the ATM site to hide their identity.