DEARBORN, Mo. – Two tickets matched all six numbers to split a record $588 million Powerball jackpot, and a news conference to reveal who bought one of them is planned for this morning at a high school in the small northwest Missouri town where it was bought.The other winning ticket was sold at a convenience store in suburban Phoenix, lottery officials said Thursday. That ticket holder had not yet come forward.

The mystery fueled a giddy mood at the Trex Mart just outside Dearborn where the ticket was sold as lottery officials and the media descended on the town of 500 people.

Cashiers Kristi Williams and Kelly Blount greeted customers with big smiles and questions about whether they had bought the winning ticket.

“It’s just awesome,” Williams said. “It’s so exciting. We can’t even work.”

The winning ticket sold in Arizona was bought at a 4 Sons Food Store in Fountain Hills, state lottery officials said. Customers poured into the store to check their tickets and relish the moment.

“I think it’s crazy, and I also think it’s great,” said Bob Chebat, who manages the 4 Sons. “I’m glad that all that work yesterday wasn’t for nothing.”

Kenny Gilbert, the general manager of Trex Mart, suggested his staff would be sharing the $50,000 bounty that the store will be awarded for selling one of the winning tickets.

“The response from the owner was, ‘I guess we’ll be able to give out Christmas bonuses,’ ” Gilbert said.

Winners have 180 days to claim their share of the prize money.

Americans went on a ticket-buying spree in the run-up to Wednesday’s drawing, the big money enticing many people who rarely, if ever, play the lottery to buy a shot at the second-largest payout in U.S. history.