A Walmart employee opened fire at a store in Virginia, leaving six people dead, police said Wednesday, in the country's second high-profile mass killing in a handful of days.

The assailant also killed himself. The store in Chesapeake was busy just before the shooting Tuesday night with people stocking up ahead of the Thanksgiving holiday, a shopper told a local TV station. There was no clear motive for the shooting, which also left four people in the hospital, police chief Mark G. Solesky said.

The gunman’s home was searched, but Solesky did not give his name, only saying he was a Walmart employee, because his family had not been notified.“I am devastated by the senseless act of violence that took place late last night in our city,” Mayor Rick W. West said in a statement posted on the city’s Twitter account Wednesday.

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