SAN DIEGO - A Mega Millions ticket bought at a snack bar at Naval Base San Diego that matched five of six winning numbers in Friday's drawing is worth more than $170,000, California Lottery officials said Sunday.

So far, the winner, who bought the ticket at the Escape Snack Bar at 3360 32nd St., has not come forward. His or her ticket matched all the winning numbers except for Mega number 20.

State lottery officials urge winners to sign the back of their tickets, keep them in a safe place and to contact lottery officials or go to district office as soon as possible. Winners have 180 days from the drawing to claim their prize.

Tuesday's drawing jackpot will be $15 million.