In a gruesome incident, a man stabbed to death seven persons, including his wife, mother, two kids and a neighbour today here, police said.

The incident occurred on Monday morning in Sainik Society locality when Sunil Kumar Sen (34) stabbed to death all seven after he had an altercation over a choked drain on Sunday night, they said, adding the accused was having strained relations with his neighbour Rajkumar Gautam for three years.

However, the reason for the drastic step by Sunil, who is absconding, is yet to be ascertained, police said.