A young man returned to the family that had taken him in a year ago* at the crack of dawn on Tuesday dressed as a ninja and armed with a knife. He stabbed the 18-year-old woman, and then stabbed her boyfriend and the girl's father before fleeing.

19-year-old William Gary Simpson Jr. is still on the lam after stabbing the family that took him in. Saskia Burke, 18, died at the scene and her boyfriend and father are in the hospital, according to KTLA.

Her mother Catherine Burke witnessed the attack and has somehow been able to give interviews about yesterday's attack. "I'm sorry that when I took the knife away last night I didn't kill him with it," she told KTLA. She called Simpson "selfish and arrogant" and added: "I hope that his parent who is a police officer and his mother, who did such a lousy job raising him, can take a look at themselves and realize what they created."

Saskia's grandmother Dorothy Burke told the Riverside Press-Enterprise that Simpson left when Saskia's father noticed that Simpson seemed to be falling for her.

“My son noticed he was getting kind of smitten with Saskia. He said, 'I didn't like what I saw. He’s all googley-eyed and gaga and it gave me a bad feeling,’” Burke told the Press-Enterprise.

*EDITOR'S NOTE 01/08/2011: This post previously mischaracterized the relationship between William Gary Simpson Jr. and the Burke family. KTLA had earlier reported that Simpson was the family's foster son, but that's wrong, according to Catherine Burke who reached out to LAist in an e-mail. She said that Simpson grew up with Burke's son. After Simpson graduated from high school, he asked if he could stay with the family while he attended Riverside Community College. He stayed with the family until November 2010. The story has been updated to reflect this information.

Catherine Burke also disputes the idea that her husband Paul booted Simpson out because he was romantically attracted to her daughter, as was reported in the Riverside Press-Enterprise. She writes in an e-mail to LAist: "Gary had no love interest, nor ever made 'googley eyed looks" nor was "gaga" over our daughter. The only bad feelings Paul had towards Gary was that Gary had agreed in exchange for room and board to get a job and pay rent. When Gary was finally offered a job, but turned it down because he didn't want to pay rent, we were very disappointed in him."

Burke said that when Simpson left her home in November 2010, he did so voluntarily.