"You could have a group of students, you could have a group of teachers, you could have a group of workers from the university, so we'll just have to see what happens," lottery spokeswoman Mardele Cohen said.
The winning numbers drawn Tuesday night in the 12-state game were 13, 14, 25, 34 and 50. The Mega Ball was 6.
In addition to the grand prize winner, 21 tickets, including two purchased in Ohio, matched all five numbers but not the Mega Ball for prizes of $250,000 each.
Another 109 tickets, including four from Ohio, matched four numbers plus the Mega Ball for third prizes of $10,000 each.
The last Mega Millions winner from Ohio claimed the $270 million prize — the biggest lottery jackpot won in the state — anonymously by forming a trust.
The winning ticket from the Feb. 28 drawing was sold in Lyons, a farming village of about 600 people 30 miles west of Toledo.
It was the fifth winning Mega Millions ticket purchased in Ohio since June and the first grand prize winner sold in Cincinnati, she said.
The Cincinnati Kroger store will receive $100,000 for selling the winning ticket. It will be up to the store to decide whether to share that with sales clerks or other employees, Cohen said.
Kroger spokeswoman Amy Shulten at company headquarters in Cincinnati referred questions to the Ohio Lottery, which she said was arranging a news conference at the store where the winning ticket was sold.