MEXICO CITY (June 9) -- The killing of a Mexican teen by a U.S. Border Patrol agent raised tensions between the U.S. and Mexico as President Felipe Calderon calls for better protection of migrants' rights and President Barack Obama has announced plans to dispatch additional troops to the border. The border patrol agent, whose name has not been released, shot and killed 15-year-old Sergio Adrian Hernandez Huereca after a group of suspected illegal migrants threw rocks at the agents at an international bridge near downtown El Paso, Texas on Monday evening, according to the FBI, the lead agency investigating the shooting. The agent was 12 yards from the border, on the U.S. side. The victim was on Mexican soil. The killing was condemned in Mexico as an abuse of power. Calderon said in a statement Tuesday that his government "will use all resources available to protect the rights of Mexican migrants." Mexican migrant Anastacio Hernandez, 32, died after a Customs and Border Protection officer shocked him with a stun gun at the San Ysidro border crossing that separates San Diego and Tijuana, Mexico. Last week the San Diego medical examiner's office ruled that death a homicide. U.S. Customs and Border Protection spokesman Doug Mosier said border agents are trained to use force when their lives or the life of a third party is threatened. "A rock is considered a lethal weapon," he said. "Agents have been seriously injured by rocks. It's a problem all along the border." Border Patrol Faces Ire in Shooting Death of Mexican Teen Sergio Adrian Hernandez Huereca - AOL News It never ceases to amaze me how the Mexican government NEVER condemns what is done to Americans by THEIR people! Authorities and otherwise.