Original Article U.S. Resident Shot in Northern Mexico Monday August 1, 2005 4:46 AM MEXICO CITY (AP) - A U.S. resident was shot to death by a Mexican police officer in a settlement outside the Mexico border city of Ciudad Juarez, authorities said on Sunday. Mexican authorities said the Saturday shooting happened when the officer lost his balance and fired by accident, moving to avoid a vehicle that had been pulled over for a traffic violation and unexpectedly started moving again. Maria Guerrero, 29, a resident of New Mexico, was fatally shot in the back, said Chihuahua state police spokesman Carlos Gonzalez. The police officer was jailed pending an investigation. ``We're sorry for what happened,'' Gonzalez said. ``It was a regrettable accident.'' It was not clear whether Guerrero was a U.S. citizen. The State Department last week renewed a travel advisory warning Americans about violence in Mexico, especially along the U.S. border.