A person of interest in the killing of Tucson Police recruit Carlos Ramirez was taken into custody while attempting to reenter the United States at the Arizona-Mexico border. U.S. Customs and Border Protection says 30-year-old Alexis Monter attempted to enter through the pedestrian lane at the Douglas Port of Entry on August 30. During inspection, officers discovered an active National Crime Information Center warrant and a biometric fingerprint check confirmed his identity. The warrant identified Monter as a person of interest in the Ramirez investigation and instructed officers to consider him armed and dangerous. CBP says officers coordinated with the Drug Enforcement Administration before Douglas Police took custody of Monter around 8:42 p.m. The Pima County Sheriff’s Department says Monter is believed to have been the last registered owner of the gray Acura MDX investigators linked to the shooting. Two other men, 39-year-old Santiago Jorge Rogers and 33-year-old Alex James Bar...