A Munford, Tn., couple told NBC's Today Show on Friday morning that they are the winner of a one-third share of the biggest lottery prize ever.
John Robinson, appearing with his wife Lisa, said he bought four tickets at Naifeh's Food Mart on Wednesday night.
Tennessee Lottery officials said the winners had come forward and there would be a press conference in Nashville on Friday afternoon.
Lottery officials earlier that the winning ticket was sold at Naifeh's, which received a $25,000 payoff.
Mr. Robinson told The Today Show that he has a practice of buying four tickets - one for each member of the family.
The couple will get $327.8 million by taking the lump sum.
Mr. Robinson works at a maintenance distribution center and his wife in a dermatologist's office.
He said his wife had called to remind him to buy the tickets. He said he did so, though he was not feeling well.
She woke him up at 4:30 a.m. to tell him they had a winner after triple-checking the numbers.
NBC said the couple provided a photocopy of the winning ticket.
The couple's attorney had the idea for the couple to make the reveal on The Today show.
Prior to that, they had only told close family members.
The couple lives near the market where the prize number was bought.