LAS CRUCES, N.M. (AP) — A Las Cruces police officer has been arrested or allegedly driving while under the influence. The Las Cruces News-Sun reported Monday that 25-year-old Lourdes Hernandez has been released on her own recognizance after being booked for aggravated drunk driving and other charges. New Mexico State Police say Hernandez was stopped on Interstate 25 early Saturday for going nearly 20 mph above the 55 mile-per-hour speed limit. According to authorities, Hernandez showed signs of impairment. She identified herself as a police officer and said that she had her on-duty firearm with her. Hernandez then refused to take a Breathalyzer test. A police spokesman says she is on administrative leave.