The NYPD says the 49-year-old suspect accused in the terrifying Sunday morning attack was wielding a meat cleaver and a kitchen knife when he stabbed his own daughter and three nieces.

A relative previously told ACS the family feared suspect Longqian Chen he would lose control one day — and kill everybody in the house, the source said.

Police say four Brooklyn girls were attacked by Longqian Chen with a meat cleaver in Bensonhurst, Brooklyn​. The girls, ages 8-16, were seriously injured.