Narendra Prabhakar Gaikwad, 28, had an argument with his 60-year-old father Prabhakar Gaikwad around midnight in Dombivili town of Thane over the latter disapproving of him marrying twice, a police official said.

Following the row, Narendra attacked his father with a sharp weapon.

Hearing the noise, their neighbour Santosh Mohan Karande rushed to save the elderly man.

Representational Pic.

Narendra, in a fit of rage, attacked Karande with a knife wounding him seriously, the police official said.

While Karande died on the spot, Prabhakar was rushed to hospital, they said.

Karande's wife lodged a police complaint against Narendra following which he was arrested.

The accused has been charged under Sections 302 (murder) and 307 (attempt to murder) of the IPC, police said.