RED BUD, Ill. â€"  The mystery about who won the third and final share of the record $656 million Mega Millions jackpot nearly three weeks ago is about to end in southern Illinois.

The Illinois Lottery says it plans to reveal the third winner of the March 30 drawing during a news conference Wednesday at the Village Hall in tiny Red Bud.

That ticket was bought at a MotoMart convenience store in the 3,700-resident farming community.

The other two winning tickets already have been anonymously claimed in Maryland and Kansas, with each stake worth $218.6 million.

Illinois Lottery officials say the holder of the Red Bud ticket is a single winner, but they haven't been more specific.

Red Bud is about 40 miles southeast of St. Louis.