Pennsylvania

Man convicted of 3 murders as teen kills himself in prison

FILE - In this June 16, 2007 file photo, Alec Kreider, center, is escorted from District Justice David P. Miller's office in Manheim Township in Lancaster, Pa., after being arraigned for the May 2007 murders of Tom, Lisa and Kevin Haines. Authorities said Monday, Jan. 23, 2017 that Kreider has killed himself in prison. Cumberland County Deputy Coroner Jeff Miller said Kreider was found hanging in his cell Friday at the state prison in Camp Hill. (Dan Marschka/LNP Media Group Inc. via AP)

FILE - In this June 16, 2007 file photo, Alec Kreider, center, is escorted from District Justice David P. Miller's office in Manheim Township in Lancaster, Pa., after being arraigned for the May 2007 murders of Tom, Lisa and Kevin Haines. Authorities said Monday, Jan. 23, 2017 that Kreider has killed himself in prison. Cumberland County Deputy Coroner Jeff Miller said Kreider was found hanging in his cell Friday at the state prison in Camp Hill. (Dan Marschka/LNP Media Group Inc. via AP)  (The Associated Press)

Authorities say a man who broke into a classmate's home in 2007 and stabbed the teenager and his parents to death in 2007 has killed himself in prison.

Cumberland County Deputy Coroner Jeff Miller said Monday that 25-year-old Alec Kreider was found hanging in his cell Friday at the state prison in Camp Hill.

The Department of Corrections says staff members tried to revive Kreider after a guard found him unconscious in his cell. He was pronounced dead at a hospital.

Kreider was 16 when Kevin Haines and his parents, Thomas and Lisa Haines, were killed in Lancaster County in May 2007. The couple's daughter, a college student, was awakened by the attacks and escaped unharmed.

Kreider pleaded guilty in June 2008 to first-degree murder and was sentenced to three consecutive life terms.