Agent Fires Gun at Rock Throwers at Nogales Fence The Border Patrol says an Arizona agent working along a Nogales border fence fired at rock throwers while breaking up a drug-smuggling attempt, and one of them might have been wounded. Nogales police Chief Jeffrey Kirkham told the Nogales International (http://bit.ly/y2BlbG) he was told the agent fired in self-defense Monday morning after being shelled with rocks. The FBI was called in to investigate as an assault on a federal officer. Nogales, Mexico, police say they interviewed a man who was shot in the arm and the stomach. He denied any involvement in the drug-smuggling operation and says he was walking down a street when he was wounded. Information from: Nogales International, http://www.nogalesinternational.com/