An off-duty Walmart employee fatally shot a customer who tried to help a female employee who had gotten into a fight with the gunman, Florida law enforcement officials said Wednesday.

Tironie Sterling, 22, is charged with first-degree murder for Tuesday afternoon’s shooting at a suburban Fort Lauderdale Walmart, the Broward County Sheriff’s Office said.

According to investigators, Sterling went to the Lauderdale Lakes store to meet with a female colleague. They got into an argument that turned into a fight, with Sterling dropping a handgun onto the floor.

A male customer came to the woman’s aid, but Sterling retrieved his gun and shot the man several times, killing him, investigators said. The victim’s name and age have not been released.

Sterling fled the store, but was arrested hours later, investigators said. He was being held without bond Wednesday awaiting his initial court appearance. It could not be immediately determined if he has an attorney.

Walmart’s press office did not immediately respond to a request made through its website seeking comment.

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