She fired her Taser before Perez took it from her. Guyger then fired a single shot, striking Perez in his abdomen.
Perez was arrested and charged with taking a weapon from an officer, possession of methamphetamine and marijuana and violating his parole, according to the Dallas Morning News.
He signed a plea agreement in 2018 for the charge of taking an officer’s weapon and was sentenced to two years in prison.
On Thursday, Guyger, who was in full uniform, mistakenly walked into Jean's apartment and fatally shot him. She had moved into the complex about a month earlier and did not know Jean, the Dallas Morning News reported.