Documents obtained by The Associated Press show that a former Marine charged with killing a pregnant colleague in North Carolina was not the father of the unborn child.

In a report completed by the Department of Defense Armed Forces Institute of Pathology on May 7, DNA analysts concluded that former Cpl. Cesar Laurean was not the father of Lance Cpl. Maria Lauterbach's unborn child.

Lauterbach was about eight months pregnant when she died. She told Navy investigators that she was raped by Laurean in 2007, though later recanted her claim that Laurean was the father of her unborn child. Investigators did not corroborate the rape claims.

Laurean is charged with first-degree murder in Lauterbach's death. He was arrested in Mexico in April 2008, and extradited to North Carolina last month.