A 70-year-old man allegedly bludgeoned his 38-year-old wife to death before committing suicide by hanging himself from a ceiling fan at home in Delhi's Shahdara, police said Thursday.
The dead persons were identified as Manak Chand and his second wife Lakshmi, they said.
The man's grandson found the bodies and alerted the police, officials said.
According to preliminary investigation, the role of an outsider seems unlikely as there is no evidence of anyone breaking in or ransacking the house, said Deputy Commissioner of Police, Shahdara, Meghna Yadav.
The dead man's family has also not alleged any foul play, Ms Yadav said.
According to the family, the couple were not getting along, the officer added.
Police suspect the man killed his wife by repeatedly hitting her with a brick which was recovered from the spot, the DCP said.
Manak Chand had seven children.