Detroit gas station clerk locked doors after customer's payment was denied for $3. He shot three people, killing one.

A man is being charged with murder after he allegedly shot three people when a gas station clerk in Detroit, Michigan, locked the doors over a denied credit card payment of just $3.

David Langston was shot and survived the incident, but his longtime friend Carlos Kelly did not survive the shooting at the Mobil gas station at about 3 a.m. Saturday morning.

Langston told WJBK-TV that he and Kelly had stopped to purchase some cigarettes after celebrating Cinco de Mayo that evening when they stepped into an argument between another customer and the clerk.

Langston said the clerk locked the door to prevent the arguing customer from walking out on his debt.

"We were like let us up out of here, we don't have anything to do with this," Langston said.

He said that the customer told them, "If you don't unlock this door, I'm gonna shoot everybody in here."

"Please man don't shoot us we don't got nothing to do with this, man," Langston remembers telling the man.

He says Kelly replied, "Man, he ain’t gonna shoot us, let us up out of here."

That's when the man shot all three men.

The assailant fled the scene but was later apprehended by police and identified as 27-year-old Samuel Anthony McCray. He was charged with first-degree murder, two counts of assault with intent to murder, three counts of felony firearm, and another count of possessing a firearm as a felon.

Investigators also discovered that the gas station was unlicensed, and they shut it down.

Langston, who is 37 years old, said that he and Kelly had been friends since grade school. Kelly was the father of three children.

Here's more about the harrowing incident:

Detroit gas station shooting: Friends beg for mercy as angry customer opens firewww.youtube.com

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