If you’ve got a lotto ticket lying around, you may want to check it.

Someone has become an instant millionaire, winning close to $4 million on Monday.

But the winner is yet to claim their prize.

The winning entry was purchased at Riverwood Newsagency on Belmore Road in Riverwood.

Matthew Hart from NSW Lotteries says they have “no clues as to the identity of the ticket holder” and is urging everyone to check their wallets.

The Lucky Lotteries Super Jackpot ticket was for draw 10234 is worth a cool $3.88 million.

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