The Delhi local allegedly hacked his son to pieces on Sunday night after they argued about the latter's drinking habits.
Reportedly, this was the case on Sunday night as well, when Manawwar returned home drunk just before 10pm.
As soon as Munawwar returned home, his father began scolding him, which resulted in a heated argument and an altercation.
"In a fit of rage, Ismail (the father) picked up a billhook lying in a corner of the room and attacked his son on the neck. Munawwar immediately collapsed on the floor but his father continued to hit him a few more times," said a senior police official.
NDTV also reports that Ismail is now in police custody, even though he fled the area right after the crime.