Ernesto Rascón, an Arizona resident, went to see oral surgeon Amed de Jesús Preciado Hernández without an appointment and was refused service. Rascón then became frustrated, waited for Hernández to exit his office, and stalked him back to his car. Rascón then calmly walked to and opened fire into the windshield of Hernández’s car, killing him. The Criminal Investigation Ministerial Agency and Mexican security forces went to serve a warrant at a home where Rascón allegedly began shooting at the authorities. Rascón, who has a criminal history in the US, hit 2 officers, grazed one in the head, and wounded another in the left leg, was killed by authorities, and both officers have since recovered and been discharged.