Three people died as a result of the fire opened by unidentified person at the Walmart in Thornton (American Colorado), reported the Agency Associated Press with reference to data of the local police.
Died in the hospital injured woman. Two other men, as previously reported, died at the scene.
While there is no data about who and for what reason did the shooting. No one was detained, the police are talking to witnesses, trying to get at least a description of the gunman, said the Associated Press.
The message about the shooting came to the police at 18:30 local time on Wednesday (03:30 GMT Thursday) on arrival of a police officer on the scene, she was still going.