Police took that suspect into custody, as well as two others wanted for questioning.
Two of the four were hospitalized. No officers were injured.
Police had a back section of the parking lot taped off as the search for evidence.
A witness told TODAY’S TMJ4 he saw a man draw a gun and fire at least five shots in the direction of the parking lot.
"I saw the guy over there kind of wandering around over here. And then all of a sudden I am walking and a cop started running. And I looked and there was the guy over there and all of a sudden I hear, 'Pop, pop, pop'," said Sam Holguin.
"All of a sudden a police officer started coming and saying, 'Drop your weapon, drop your weapon.'" Holguin also said.
Oak Creek Police are looking for witnesses or anyone with damage to their vehicles. If you have information, contact police at 414-762-8200 or Crimestoppers at 414-766-7699.