Locals who purchased Saturday Lotto in Harvey are being urged to check their tickets.
A division one ticket was sold by Harvey Newsagency and is worth $2 million.
The winning ticket was one of five across the country that matched the numbers to a division one prize.
Harvey Newsagency store manager Nayan Patel said the store was full of excitement and celebration this morning.
“Lots of customers have been coming into the store this morning congratulating us and sharing the excitement, even in the rain,” Mr Patel said.
“We sold two Division Two Saturday Lotto prizes in the last two months, it’s brilliant to finally sell a Division One winning ticket.”
Early voting for Secret Harbour by-election begins Monday
Welfare concerns for missing Swedish national last seen in Warnbro
Wanted man last seen in Golden Bay
Passenger critically injured in West Pinjarra crash
Unregistered painter fined for requesting hefty deposit from Singleton homeowner and not doing the job
Police hunt driver following dangerous Baldivis pursuit
Welfare concerns for boy last seen at Port Kennedy skate park
Rubbish truck catches fire in Baldivis
Driver injured in bus crash in Rockingham