PINE RIDGE, S.D. -

A 27-year-old Pine Ridge man has pleaded not guilty in the July 20 shooting death of a teenage girl in the reservation town.

James Dowty is charged in federal court with second-degree murder in the death of 13-year-old Te'Ca Clifford. He entered his plea a week ago.

Authorities say the girl was walking home with friends in the early morning of July 20 when she was shot. The U.S. Attorney's Office declined to comment on a possible motive, saying the case remains under investigation.