The deceased could not be identified yet.
Mamunur Rashid, officer-in-charge of Bhaluka Police Station, said the bomb went off at the house around 6pm.
The deceased ‘militant’ along with his wife and a child rented the house only three days back, he said, adding that they encircled the house for conducting a drive inside.
The OC also said they detained house owner Azim Uddin for interrogation.
Police suspected that the wife and the child of the alleged militant were also injured in the explosion and they managed to flee the scene.
Additional police super Nure Aalm said police have cordoned off the house immediately after the incident. He suspected that there might be more unexploded bombs inside the house.
Bomb disposal units are rushing to the spot from Dhaka, he said.