At least seven people have died after a gunman opened fire at a Walmart supermarket in Chesapeake, in the US state of Virginia, officials said.
A man, believed to be the shop manager, opened fire then turned the gun on himself, and is now dead.
The City of Chesapeake earlier tweeted to confirm an "active shooter incident with fatalities".
Several others were injured in the shooting. The attacker's motive remains unclear.
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Police told reporters that the attack took place at 22:12 local time (03:12 GMT).
Footage has surfaced online showing an eyewitness - wearing a Walmart uniform - describing what happened.
He said he had left the staff room, whereupon a manager entered and opened fire.
"Unfortunately we lost some of our comrades," said the man, clarifying that he did not know how many of his comrades were shot.
Police spokesman Leo Kosinski said the shooting was believed to have taken place inside the shop, and the suspect acted alone.
Walmart said it was "shocked by this tragic event" and was "collaborating with law enforcement".
Further updates from police in Chesapeake are expected on Wednesday morning.
A spokesman for Sentara Norfolk General Hospital was quoted by local television station WAVY-TV as saying that five people were being treated there.
One woman told WAVY-TV that her brother, a 20-year-old shop employee, was shot just 10 minutes after coming to work.
But he says his brother can talk to relatives and send texts - saying this is "consoling".
Another woman named Joetta Jeffery told CNN that her mother was in the building when the attack occurred, and managed to send a text message.
Ms Jeffrey said his mother was unhurt but in shock.
Mark Warner, a Democratic senator for the state of Virginia, wrote on Twitter that he was "sick of reports of yet another mass shooting".
Virginia state senator L. Louise Lucas, also a Democrat, added that she was "absolutely heartbroken".
He wrote on Twitter: "I will not rest until we find a solution to end this epidemic of gun violence in our country."
Tuesday night's attack came just days after a gunman opened fire at an LGBT nightclub in the US state of Colorado, killing five people and wounding 17.
In 2019, a mass shooting at a Walmart in the Texas city of El Paso killed 23 people. This article was written by EDUKASI CAMPUS.