Police in Houston say a 14-year-old girl who delivered a stillborn fetus in an airliner restroom on her way back from a middle-school field trip will not be charged with any wrongdoing.

Homicide investigators say they interviewed both the girl and a 14-year-old boy believed to be the father.

Police say that prosecutors decided not to pursue charges against the girl. The fetus was found in a waste can on a Continental Airlines flight that landed at Houston after a flight from New York.

Authorities say the girl told police she didn't know she was pregnant. Preliminary autopsy results indicated the fetus was stillborn and not viable.

The girl's name has not been released.