Carole Everett, director of communications for the Maryland Lottery, says the winning Mega Millions ticket was purchased at a retailer in Baltimore County. She said it's too early to know any other information about the lucky ticket-holder or whether others were sold elsewhere in the nation.

Everett says the last time a ticket from the state won a major national jackpot was 2008 when a ticket sold for $24 million.

She says, "We're thrilled. We're due and exciting."

The estimated jackpot dwarfs the previous $390 million record, which was split in 2007 by two winners who bought tickets in Georgia and New Jersey.

Copyright 2012 The Associated Press.