Spokane police served Planned Parenthood with a search warrant for an aborted fetus.

KREM reported Wednesday ( http://bit.ly/ntdYBZ) that detectives hope a DNA test on the tissue will prove paternity, which would be evidence in a child rape case.

Police say a 15-year-old girl became pregnant by a 21-year-old man in early August. When her parents learned about the pregnancy from her school at the end of the month they took her to Planned Parenthood for an abortion.

The DNA testing is likely to take several weeks.

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Information from: KREM-TV, http://www.krem.com/