A person with a ticket matching all six Powerball numbers in Saturday’s $1.3 billion jackpot came forward Monday to claim the prize, Oregon officials said.

The lottery ticket was purchased at a Plaid Pantry convenience store in the northeast part of the city, Oregon Lottery said in a statement.

Oregon Lottery is working with the person in a process that involves security measures and vetting that will take time before a winner is announced.

“This is an unprecedented jackpot win for Oregon Lottery,” Oregon Lottery Director Mike Wells said in the statement. “We’re taking every precaution to verify the winner before awarding the prize money.”