The family of a man killed in an alleged hit-and-run in Golden Bay over the weekend is urging anyone with information about the incident to come forward.
Rockingham father-of-nine (with another baby on the way) Mathew Neary was found lying in the northbound lanes of Mandurah Road just north of Dampier Drive on Sunday afternoon after deciding to walk home from a family function.
He had suffered significant injuries and could not be saved.
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Major Crash officers are yet to identify a suspect, with Mathew's cousin Brody Rodgers making an emotional plea for information during an interview on Tuesday.
"I urge anyone with any information, please come forward and give justice that Mat deserves and closure that us as a family deserve," he said.
"Any bit of information could be that vital bit of information that the police need."
Mr Rodgers remembered Mathew as a family-orientated man who "put everyone before himself."
"He was the most amazing father his kids could have asked for," he said.
"Everyone in the family has lost someone special.
"He wasn't a rich man money-wise, but the love that he gave... he was always the life of the party.
"It doesn't matter what he was going through he would always put others first."
The suddenness of Mathew's death has left the family in shock, but Mr Rodgers said they would rally around each other in their time of need.
"The good thing about our family is it's so big and everyone's together," he said.
"Unfortunately when this happens it does show how close of a family we all are."
Major Crash Investigation section Detective First Class Constable Ben Rooney echoed the plea for information.
"We are calling for people with information to come forward regarding the identity of that vehicle and the identity of the driver involved," he said.
"We're also calling for people who were driving on Mandurah Road at the time who may have seen the male or any other vehicle in the area.
"The vehicle is likely to have extensive front-end damage.
"The family is devastated having lost a father, a partner, a brother, an uncle and a son, and this person needs to hand themselves in as soon as possible."
Anyone with information is urged to contact Crime Stoppers on 1800 333 000 or make a report online.
A GoFundMe page has been set up to help ease the financial burden left on the young family, with more than $12,000 raised in two days.
To donate, click here.