Family members of a 24-year-old Kansas man shot and killed outside a rap concert Thursday night are angry, shocked and grieving, the man's sister said.

An Oklahoma City police officer shot the man about 10:30 p.m. outside Farmers Public Market, 311 S Klein Ave., where 17-year-old Chicago rapper Chief Keef was scheduled to perform.

The victim was identified by his sister as Brian Simms Jr., of Olathe, Kan.

“We're angry at the police officers,” Mishellai Avery said, adding that she wanted police to release the names of the involved officers more quickly.