SAN DIEGO (AP) — A U.S. Border Patrol agent shot and wounded a man as agents clashed with a group of rock-throwing assailants, marking the latest confrontation along a violent stretch of the U.S.-Mexico border, authorities said Wednesday.

Edgar Israel Ortega Chavez was shot Tuesday night in his left buttocks and was in stable condition, according to a spokesman for Hospital General in Tijuana who spoke on condition of anonymity because he was not authorized to publicly discuss the matter.

Ortega, 22, was found by Mexican authorities on a dirt bank above the spot where the border crosses the dry, concrete-lined Tijuana River basin, Tijuana police said in a news release.

San Diego police said the shooter was a 10-year Border Patrol veteran but did not release his name.