A gunman shot and killed multiple people in a Walmart store late Tuesday in the United States of Virginia, police said, adding that the single shooter suspect is also dead.

A man believed to be the store manager opened fire then turned the gun on himself, and is now dead.

The outburst of gun violence in the city of Chesapeake comes just before Americans celebrate the Thanksgiving holiday, and follows another mass shooting at an LGBTQ club in Colorado late Saturday that left five people dead.

The largest retailer in the United States, Walmart, issued a statement early Wednesday saying: "We are shocked at this tragic event."

Reports say at least 10 people were feared killed in the shooting.