According to police, a 26-year-old man's rotting body was discovered in a PG in Gurgaon's Palam Vihar neighbourhood on Friday.
Radha Vallabh, a resident of Mathura, Uttar Pradesh, was named as the victim, according to the authorities.
Locals reported a bad stench emanating from his room to the police, who then conducted an investigation and discovered his death.
Radha Vallabh, who worked for a private enterprise in Manesar, moved to a PG in Palam Vihar on August 18, according to the police.
A buddy of his named Kanhaiya, who was from Hathras in the state of UP, and he shared the room.
According to authorities, Kanhaiya, who has been missing, has been named a suspect in the case and has been arrested on suspicion of murder.
The murder's motive won't be known until Kanhaiya is apprehended, according to the police, who also stated that they are looking for him.
Radha Vallabh's rotting body was discovered by police on Friday in his locked-from-the-outside PG room, while his companion Kanhaiya was reported missing.
The victim's brother, Krishan Kumar, said in his complaint that Kanhaiya had known their family for three years and had been his brother's buddy throughout that time.
A man named Naresh Kumar Jain told the family of the occurrence on Thursday, stating that a dead corpse had been discovered in Kanhaiya's chamber.
He discovered it was his brother's when he got there.
"My brother's roommate, Kanhaiya, left after killing him, and he did it out of hate. He shut the room from the outside to conceal his dead corpse," Krishan Kumar said in his lawsuit.
At the Palam Vihar Police Station, a FIR has been filed against Kanhaiya under sections 201 (hiding evidence) and 302 (murder) of the IPC.
The damage marks discovered on Vallabh's head and other body parts, according to Dr. Sudhir Kumar, were two to three days old.
He claimed that FSL, Bhondsi has received samples of viscera for evaluation.
"After the post-mortem, the body was given to the family members. Only when the accused has been taken into custody will the murder's motive be revealed.