INKSTER, Mich. – A woman riding her bike was shot and killed in the middle of the street in Inkster, authorities said.

It happened Thursday evening on Michigan Avenue near the intersection with Beech Daly Road.

Leah Smith was just feet away from the gunshots.

"I heard gunshots I thought it was fireworks. I was like, 'Wow. What the hell is going on?'" said Smith. "I heard gunshots. I got scared and I stood there."

Smith was watching arguments between a man and woman, possibly girlfriend and boyfriend. The two were riding their bikes when the argument erupted. The argument continued in the parking lot of the Michigan Motel.

Police sources said the man snapped.

"I said, 'Wow. He's really shooting her. I'm about to call 911,'" said Smith. "I seen the guy walk up to her and shoot her in the head."

Sources said a man driving a silver car stopped at the light and noticed the shooting. He's a CPL holder so he took out his gun and fired at the man. He fired back and ran off.

The young woman was left lying in the road dead.

"He ran. He ran down Michigan Avenue," Smith said.

But he didn't get very far. A Wayne County sheriff's deputy noticed the man walking half a mile from the scene. Sources said the man tried to run but was caught and arrested.

"I'm on the avenue every day, so it's like that could have happened to her," said Smith.