EAST ST. LOUIS (KMOV.com) – Customers at an East St. Louis gas station are lucky to be alive after people started exchanging gunfire in the parking lot.

It happened just before 1 a.m. on September 12 at the Gas Mart on 18th and Missouri.

Two cars pulled up in front of the gas station and police say the driver of a black car fired the first shot at the person in the red car. The two then engaged in a shootout with dozens of rounds fired into the gas station.

Surveillance video shows customers ducking for cover. A woman at the front of the store was buying lottery tickets when she ducked, just before the glass windows shattered from bullets.

“It could have been anyone. Thank God no one was injured or killed,” said Detective Ronald McClellan of East St. Louis Police.

McClellan says the people know one another but investigators don’t know what started the shootout. They have questioned an individual and identified the people involved but so far no arrests have been made.

Investigators say they are confident charges will be filed.

The gas station is boarded up and the store employees told News 4 it was terrifying. Clear surveillance video from the store will likely be helpful in arrests police say.