Ravi allegedly killed Siddhu, an autorickshaw driver, last night.
He then beheaded the body and put the torso and the lower part in a gunny bag and threw it near a roadside in Borabanda area, they said based on preliminary investigation.
During patrolling, the Sanathnagar police found the gunny bag which contained the body and later identified it as that of Siddhu.
A murder case has been registered and efforts are underway to nab Ravi, they said.