(CNN) They don't know his name. They don't really know anything about him, except that he's a Patriots fan.

But residents in Derby, Vermont, are grateful for a secret Santa who walked into a Walmart store on November 15 and picked up almost everyone's tab -- including the charges on layaway items for customers who weren't even there.

Shopper Julie Gates snapped a picture of the mysterious man -- who paid for her purchases that day -- as he was walking away. His face isn't visible, but he's wearing a New England Patriots jacket.

At first, Gates said she was in disbelief.

As she approached the register with a delivery box, a man asked her if she "was putting anything on layaway." She said yes, referring to her package, but that she wasn't done with her shopping yet. The man told her he'd wait until she was done and pay for everything.

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