ST. PAUL, Minn.- A Minnesota prosecutor says evidence shows Philando Castile, a black motorist, complied with a police officer and told him he was carrying a gun in the critical moments before he was shot to death.

Ramsey County Attorney John Choi said Wednesday that when Castile's body was pulled from the car, his .40-caliber handgun was deep in a front pocket of his shorts.

Officer Jeronimo Yanez pulled Castile over in a St. Paul suburb July 6. Choi says evidence including squad car video shows that when Yanez approached the car, Castile calmly told him he was carrying a gun.

Choi says the officer told Castile not to pull it out, and Castile and his girlfriend both responded that he wasn't. Choi says the officer then screamed, pulled his gun and fired seven shots.

Choi announced second-degree manslaughter charges against Yanez on Wednesday.