Police say the suspect may have been connected to an earlier attempted carjacking in Tumwater where a man opened fire at an intersection and injured a 16-year-old girl. "(The suspect) hijacks a auto apparently to get here, then hijacks another vehicle.
When they then arrived to that scene, they received yet another call that someone was trying to carjack vehicles at Walmart.
Shots were fired at the Walmart in Tumwater at about 5pm local time (1am BST), according to reports.
Police tell the station that the gunman then attempted to carjack someone and was shot by a bystander.
Police officers on Sunday investigate the scene of a deadly shooting at a Walmart store in Tumwater, Washington.
At about 5:30 p.m., they started getting numerous calls of shots fired in and around a nearby Walmart. "And as he tried to hijack a second auto, a citizen who was in the parking lot took his gun and shot the suspect".
Police said there is no danger to the public. There are no other suspects in the carjacking incidents or reported shootings. After he failed in the attempt, the suspect, whose name has not been released, headed to a Walmart parking lot where he made another attempt to steal yet another vehicle.
A witness told KOMO News they were in line in the store when gunfire erupted.More news: France weighing possible minesweeping operation at Yemen port: ministry
Then, moments later, she heard a "pop, pop, pop" coming from what she said was the other side of the store, and she said everyone froze.
The case is likely to provide fuel for firearms advocates who say that a "good guy" with a gun is often the best way to stop crime, following increased calls for gun control after recent mass shootings. Police reported just two, one of whom fired at the suspect and killed him.
"All of a sudden, you hear this pop or a crash sound".
Some of them directed vehicles away from the parking lot of the store, which was ringed with yellow tape.
Adams said he then saw a father with his family take out his concealed weapon and shoot the gunman dead.
"He is a hero", Adams said.
"There were all kinds of people running out", Robert Berwick, who was in the back of the store, told the Seattle Times.