Police were called to South Camden neighborhood after reports that a man had stabbed someone. The suspect was identified as Lamont Morton, 19.
When police arrived, they found Morton naked, knocking on the door of a house in the neighborhood, said Camden County Prosecutor's Office spokesman Jason Laughlin.
Morton and the female officer got into a physical altercation, and then the second officer on the scene shot Morton several times, killing him, Laughlin said.
Laughlin said it is not known whether the female officer was shot by her fellow officer in a friendly fire incident or whether Morton managed to obtain her gun and shoot her.
The officer was taken to Cooper University Hospital where she was in "serious condition," Laughlin said.