$1 million reward for dozens of unsolved Western Australia murders, missing person cases

Investigators are hoping dozens of decades-old unsolved murders and missing persons cases in Western Australia will be resolved after the government announced $1 million rewards.

There are now 64 open investigations with a $1 million incentive for information that leads to an arrest and conviction in the cold case homicides.

For 39 of those cases, it's the first time a reward has been offered while 21 others had smaller amounts attached.

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The government hopes the reward will encourage people to come forward with crucial information to help solve the cases.

"These significant rewards give people who have vital information one million reasons to come forward," Police Minister Paul Papalia said.

"The financial incentive will hopefully ensure those responsible for these heinous crimes are brought to justice and assist grieving families in finding closure."

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Police Commissioner Col Blanch said police never give up on unsolved homicides but the $1 million rewards may help provide the missing pieces to the puzzle in these cases.

"For those families who have lost loved ones and are still waiting for justice, we hope this reward money is able to deliver the closure they deserve," he said.

"We know there are people in the community who are able to provide valuable information on these unsolved cases, which is why we need you to contact us - so here is a million reasons why."

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Blanch said there are people in the community who know what happened in these crimes.

He added advances in forensic technology can also help solve the cases.

Here is the full list of unsolved homicides that now have a $1 million reward attached.

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