Lotto officials are on the hunt for two division one winners from Saturday’s Tattslotto draw, who each stand to win  $503,668.42.

The winning entries were purchased at Cairnlea News & Lotto (Cairnlea Shopping Centre), and Caroline Springs Lotteries (Caroline Springs Shopping Centre). and were two of the eight division one winners across Australia.

It is the second division one prize the Cairnlea store has sold this year, having sold a division one TattsLotto winning entry to a local resident in May.

Saturday’s winning entries are not registered to a Tatts Card which means Tatts officials have no way of contacting the winners  and have to wait for them both to come forward to confirm the prize.

Tatts spokesperson Bronnie Spencer said west Melbourne’s newest division one winners could be walking around with a winning ticket in their pockets and not even know it.

“There are over 500,000 reasons why TattsLotto players from Melbourne’s west should check their tickets today,” Ms Spencer said.

“Imagine how your plans for the week may change once you discover you are now a $500,000 richer.

“You may not think it’s possible that you could be the division one winners we’re searching for, but if you purchased an unregistered entry in the weekend’s TattsLotto draw that you haven’t checked yet, you’re in with a chance.”