Two police officers were shot and killed Saturday in a South Texas border town after reportedly responding to a disturbance call, authorities said. The McAllen police officers were shot on the south side of the city and transported to an area hospital, said Lt. Christopher Olivarez, spokesman for the Texas Department of Public Safety. “We have lost two brave public servants who sought only to keep peace in our City,” McAllen Police Chief Victor Rodriguez told The (McAllen) Monitor.