A drug addict youth killed his father allegedly for money in Ghatail upazila on Saturday night.
The deceased, Somes Uddin, 55, was a resident of Hengarchala village.
Police detained the alleged killer Hasu Miah.
Locals said Hasu, who was tied to a pole by his family members, used to torture his parents for money.
Hasu entered his father's room around 9:00pm and killed him with a sharp weapon, police said.