store's management confirmed that it was the winning one.

Dig deeper:

The Florida Lottery website explains that retail locations can only redeem prizes of $599 or less, while those between $600 and $1,000,000, like the victim's, must be taken to a district office. Those lucky enough to win more than a million dollars or a game that requires an annual payment must go to the Florida Lottery headquarters. There are also mail-in options for prizes of $250,000 or less.