A mother and her daughter were killed and a third daughter was injured by a man who sexually assaulted the girls.

Leeton Thomas allegedly wanted to stop the family from testifying against him in court.

District Attorney Craig Stedman of Lancaster County, Pennsylvania, said that Thomas, 37, stabbed Lisa Scheetz and her teenage daughters on Thursday.

Scheetz and her 16-year-old daughter died of their wounds. Her 15-year-old daughter remains in a hospital in critical but stable condition. She is expected to make a full recovery.

Scheetz’s 13-year-old daughter was not home at the time of the attack.

The 15-year-old girl identified Thomas as the attacker. Police apprehended Thomas at his home a few hours after the stabbing.

Thomas was arrested earlier this year and he was charged with numerous sexual offenses against two of Scheetz’s daughters, including the deceased 16-year-old girl.

Thomas was out on $5,000 bail at the time of the attack. He was ordered to stay away from the family, but he broke into the home and stabbed the victims.

Now, the accused child molester has been charged with an additional two counts of criminal homicide and one count of attempted homicide and burglary.

He is being held without bail.