The mystery winner held the only division one winning entry nationally in Oz Lotto draw 1377, to take home the entire division one prize pool.

But the multi-million-dollar winning was unregistered, so officials from the Lott have no way of contacting the winner and have to wait for them to come forward to claim their prize.

The Lott spokesperson Lauren Cooney said all NSW players who had an entry in the Oz Lotto draw were being urged to check their tickets as soon as possible.

This will be the tenth Oz Lotto division one winner of 2020. Collectively, they have taken home $127,143,666 in division one prize money.

In addition to the coveted $50 million division one prize, a total of 925,102 prizes worth more than $18.6 million were won in divisions two to seven. This includes 16 division two winners who each scored $32,955.25.

In 2019, 13 division one winning Oz Lotto entries across Australia collectively won $320 million. During this time, the biggest Oz Lotto jackpot was $80 million on 25 June 2019, which was won by two division one winning entries that took home $40 million each.

The winning numbers in Oz Lotto draw 1377 on Tuesday 7 July 2020 were 12, 9, 13, 7, 32, 5 and 4. The supplementary numbers were 19 and 35.

Entries can be checked in-store, online at thelott.com, or via the Lott app.