Editor's note: It is the general policy of Northeast Ohio Media Group not to show images of people being killed. We chose to publish this video because it addresses questions that have been raised about the behavior of the suspect and the police.

COLUMBUS, Ohio — Ohio Attorney General Mike DeWine released a surveillance video Wednesday showing John Crawford III being shot to death by police last month in a Dayton-area Walmart.

DeWine's release of the video and 9-1-1 recording coincided with a Greene County grand jury finding that Beavercreek police were justified in shooting the 22-year-old man, whom they believed was armed with a rifle.

In the footage, Crawford is seen talking on a cell phone and waving what turned out to be an air rifle at the end of a store aisle. Police arrived after a 9-1-1 caller reported that a man was waving around a gun and pointing it at people.

When a woman accompanied by two young people walked up to the other end of the aisle, neither they nor Crawford appeared to notice each other. However, the 9-1-1 caller, Ronald Ritchie, told the dispatcher that "He just pointed [the gun] at two children."

Soon afterward, police advanced on Crawford and fired at him.

DeWine had previously refused demands by Crawford's family and a state lawmaker to publicly release the surveillance video, claiming that doing so could taint potential jurors if the case went to trial.

Federal officials announced Wednesday that the U.S. Justice Department's civil rights division, the U.S. attorney's office, and the FBI will open an investigation into the shooting of Crawford, who was black, by white officers.