NAVASOTA, Texas (AP) - A man serving 70 years for a 1978 slaying near Houston who was also under investigation in the unsolved killings of several missing girls has collapsed and died in a Texas prison.

Texas Department of Criminal Justice spokesman Jeremy Desel says 79-year-old inmate Edward Harold Bell died Saturday at the Wallace Pack Unit in Navasota.

Desel added that there was no foul play suspected. He declined to discuss Bell's medical history due to privacy laws.

The Houston Chronicle reports that Bell's death leaves unanswered questions about the unsolved murders of 11 girls he claimed to have killed.

Bell was already serving time for killing an ex-Marine from Pasadena when he admitted in 2011 to kidnapping and killing several girls in the 1970s.

Information from: Houston Chronicle, http://www.houstonchronicle.com

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