Small Fla. city wonders who hit historic $590.5M Powerball jackpot; winner hasn't come forward

A woman prepares to choose her numbers on a lottery ticket Saturday, May 18, 2013, in the Chinatown district in Oakland, Calif. A record Powerball jackpot has climbed to $600 million, and lottery officials speculated the jackpot would continue to soar in the run-up to Saturday’s drawing. (AP Photo/Ben Margot) (The Associated Press)

Armous Peterson fills out his slip for the Powerball lottery at Jimmy's Mart on Saturday, May 18, 2013, in Columbia, S.C. Peterson keeps track of what numbers he plays from week to week. (AP Photo/Jeffrey Collins) (The Associated Press)

A clerk dispenses a Powerball Lottery ticket in Oklahoma City, Friday, May 17, 2013. Powerball officials say the jackpot has climbed to an estimated $600 million, making it the largest prize in the game's history and the world's second largest lottery prize.(AP Photo/Sue Ogrocki) (The Associated Press)

Some lucky person walked into a Publix supermarket in suburban Florida over the past few days and bought a winning Powerball ticket now worth an estimated $590.5 million. The jackpot is the highest in Powerball history.

On Sunday, residents of the small city of Zephyrhills wondered who the winner might be. The ticket-holder hadn't come forward yet. The store and parking lot were abuzz with activity and TV live trucks. A call to Publix's headquarters in Lakeland, Fla., was not immediately returned.

Zephyrhills is a small city in Pasco County, about 30 miles northeast of downtown Tampa. Once a farming town, it's now known for skydiving and retiree mobile home parks. It's also home to Zephyrhills bottled water.

A lottery official said the ticket-holder would be Florida's sixth Powerball winner.