WATCH: Police hold press conference on Dayton Walmart shooting

BEAVERCREEK, Ohio (WXIX) - Beavercreek police will begin a press conference at 2 p.m. with details on the Dayton Walmart shooting that left three people in critical condition and one with life-threatening injuries.

Police say a man with a gun walked into the store on Monday around 8:30 p.m. and began shooting.

Four adult victims were shot - three females and one male, the police department said on Tuesday.

The suspected shooter reportedly died from a self-inflicted gunshot wound, police said.

The name of the gunman and a possible motive are not known at this time.

Walmart released the following statement to FOX19 NOW:

We’re heartbroken by what’s happened at our Beavercreek, Ohio store. This remains a developing situation and we’re working closely with investigators on the scene. All questions should be directed to local law enforcement

This is the second major shooting incident at the Beavercreek Walmart in just under a decade.

John Crawford III, 22, of Fairfield, was fatally shot by police in the store in 2014. A caller told the 911 dispatcher that he was waving a rifle around, but later retracted that statement.

Police say Crawford was not obeying police orders as they commanded him to drop the weapon.

After the fatal shooting, officers learned that the 22-year-old was holding an airsoft gun, according to the Associated Press.