A man hailing from Delhi's Nand Nagri area was shot dead on Sunday around 7 am.
According to Delhi Police, Zulfikar Qureshi was with his son when they were attacked.
Zulfikar was shot on his head while his son was attacked with a sharp-edged weapon.
During the initial probe by the police, it has emerged that there are several cases against the father-son duo.
At prima facie, it seems to be a case of personal rivalry but the police are open to all angles of investigating.