Marqueese Lee, who is 20-years-old, has been charged by police for strangling his 6-year-old and 10-year-old half-sisters, as well as attacking his mother. According to spokesman Bernie Weisenfeld of the Gloucester County Prosecutor’s Office Lee has been charged with aggravated assault and two counts of murder.

Police went to the family’s home after a neighbor reported that Lucille Bevans, who is the girls’ mother, had been hit in the head with a hammer. She said that the mother was able to get away with her 1-year-old nephew, but that the two girls were still inside the house.

Authorities then went to the home were they located the girls’ body, and found Lee bunkered down in the living room with a knife to his chest. Police were able to take Lee into custody shortly afterwards, and, after having his mental health evaluated, has been placed in the county jail.

According to the neighbors Lee dropped out of high school, and often watched over the two girls when the mother was at work. Thomas Sullivan, who is the chief of detectives for the Gloucester County Prosecutor’s Office, said that police has had to go to the house at least once before on a domestic incident between Lee and his mother.