CNN) -- Police in North Carolina shot and killed a man running toward them Saturday morning -- but he may have just been looking for help after a car wreck.

Officers responded to a "breaking and entering" 911 call at a home in Charlotte.

The homeowner told dispatchers that a man had been knocking on her door repeatedly.

Police say that when they got to the scene, a man matching the caller's description ran toward them.

One of the officers fired his stun gun, but it was "unsuccessful." Another officer then opened fire, police said.

Jonathan Ferrell died at the scene. He was shot several times.

He was unarmed.

Police now believe Ferrell was seeking assistance after crashing his car.

Police have charged Officer Randall Kerrick with voluntary manslaughter -- a felony. He turned himself in Saturday afternoon and was released Sunday on $50,000 bond.