TUCSON, Ariz. -- Two off-duty border agents based in Texas were found dead Friday near Tucson in what authorities were investigating as a murder-suicide. The male and female agents, who both worked for U.S. Customs and Border Protection in El Paso, were found around 2:30 a.m. by a Tohono O'odham Nation police officer who was responding to a report of an abandoned vehicle 10 miles southwest of Tucson, the tribe said. Doug Mosier, a spokesman for the Border Patrol in El Paso, said the agents were identified as Arturo Betancourt, 45, and Elizabeth Granillo, 31. Betancourt had worked for the...