Man, 19, arrested in deadly Murrieta stabbing

A man wanted in connection with a deadly stabbing in Murrieta has been arrested.

William Simpson Jr., 19, is accused of stabbing three people at a house last Tuesday, killing an 18-year-old woman.

The woman's father and her 17-year-old friend were also stabbed and hospitalized in critical condition.

Simpson was arrested Friday night at his mother's house and brought back to Murrieta.