A man admitted to setting fire to a Nebraska Walmart while the superstore was filled with customers and staff, authorities say.

William Eckman, 20, has been charged with first-degree arson , terroristic threats, and criminal mischief causing a loss of more than $5,000, several local outlets including Lincoln-based CBS affiliate KOLN reported .

The fire erupted on Sunday.

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It was just before noon when the York Police Department was called to the Walmart in the city. As officers responded, a 911 dispatcher with the city reportedly told them a man was admitting he had set the blaze. That man is alleged to have been Eckman.

The store had to be evacuate

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