LAPD: Video shows teen was armed before he was shot by police

The surveillance footage from a local business shows 18-year-old Carnell Snell Jr. with a gun in his left hand during a foot chase with police on Saturday afternoon.

Snell's encounter with police started shortly before 1 p.m. Saturday, when officers tried to pull over a car with paper license plates, police said. Officers believed the car was stolen because "the paper plates didn't match the year of the vehicle," Beck said.

But the car didn't stop, and officers gave chase, police said.