Police in Alabama on Saturday were searching for a gunman whom they believe was responsible for shooting two teenagers at a shopping mall on Thanksgiving night.

The incident began with a fight and shooting in suburban Birmingham at the Riverchase Galleria, a mall crowded with Black Friday bargain hunters. An 18-year-old was shot twice and a 12-year-old bystander was shot in the back.

An officer responding to the scene then shot and killed 21-year-old Emantic Fitzgerald Bradford, Jr. of Hueytown. Police said Bradford was fleeing the scene and was brandishing a weapon.

Police initially told reporters they thought Bradford had shot the teen after a fight but retracted that statement Friday night.

"New evidence now suggests that while Mr. Bradford may have been involved in some aspect of the altercation, he likely did not fire the rounds that injured the 18-year-old victim," Hoover Police Captain Gregg Rector said in a statement.

Police said they "regret that our initial media release was not totally accurate."

Rector said investigators now believe that more than two people were involved in the initial fight ahead of the shooting, and that "at least one gunman" is still at large who could be responsible for the shooting of an 18-year-old male and 12-year-old female.

Video posted on social media by shoppers showed a chaotic scene as shoppers fled the mall, which closed for the remainder of Thursday night.

The Alabama Law Enforcement Agency has taken the lead role in the investigation since it is an officer-involved shooting.

Hoover police asked for anyone with information, photos or video evidence of this crime scene to please contact investigators.

A witness, Lexi Joiner, told Al.com she was shopping with her mother when the gunfire started. Joiner said she heard six or seven shots and was ordered, along with some other shoppers, into a supply closet for cover.

"It was terrifying," Joiner said.

A woman who described herself as the mother of the injured 12-year-old posted on social media that the girl was on a Black Friday shopping trip with other family members when the shooting happened, and didn't immediately realize that the pain in her back was from a bullet.

"She was hurting a lot, but very brave and positive as always," the mother wrote after seeing the girl when she arrived at a hospital.

Hoover police said Friday morning that the girl was in stable condition.

The officer who shot the gunman was placed on administrative leave while the authorities investigate the shooting. The officer's name was not released. The officers were not hurt.

The Riverchase Galleria mall bills itself as the largest enclosed shopping center in Alabama, with more than 150 stores.