By Rusty Surette, NEWS 9

MIDWEST CITY, Oklahoma -- Midwest City police are investigating a shooting at a 7-Eleven where three people were injured.

The shooting happened at the 7-Eleven on N.E. 10th Street and N. Oak Grove Drive at about 4 a.m. Sunday. Police said witnesses said a black male was carrying a gun when he pulled his shirt over his head and opened fire into a crown of people in the parking lot.

"We just don't have a whole lot. It's not that we've had any problems with anyone being uncooperative. We just don't have a lot of information that's been able to assist us in apprehending this individual," said Midwest City Assistant Police Chief Sid Porter.

Police said the female victim, 19-year-old Darlin Thrash, was shot once in the chest and was transported to a local hospital for treatment. She is currently listed in serious condition. Kendale Brown, 19, was shot once in the hand, treated at a local hospital and released.

A 15-year-old victim was shot in the back and is currently listed as critical in a local hospital. The 15-year-old's identity was not released.

The suspect was described as a black male, between 18-24-years-old, 5'7", 140 pounds wearing a light blue T-shirt and dark blue baggy pants.

"At this time we don't have a motive. We're still asking anyone who may have heard anything since the shooting or know anything to please call us," Porter said.

Anyone with information is asked to call the Midwest City Police Department at (405) 739-1306.

Police say they're reviewing the store's surveillance cameras for anymore clues in this case.