Through tears and heart-breaking sobs, Cory Ryther has urged his local community not to forget his wife and unborn child.
His 27-year-old pregnant wife Joan Ryther was raped and murdered while walking to work in Logan in southeast Queensland last week.
Her partially clothed body was found on Wednesday morning last week, dumped in a front yard near the McDonald's restaurant where she worked.
On Thursday afternoon, Mr Ryther braved a crowd of about 300 people at a memorial service in Logan to demand justice.
"She was my everything ... and now she's gone in the worst possible way," he said, choking back tears.
"Bashed, stripped of her dignity, a new life inside of her extinguished before it ever had the chance to see the light of day."
Mr Ryther urged the crowd, which sported Mrs Ryther's favourite colour purple, to keep his wife in their thoughts.
"Please, please don't forget my wife, my child and please, don't let this happen again," he said.
"Women, when you're out at night, don't walk alone."
Logan District Superintendent Noel Powers promised the community the killer would be caught.
"(I want) to give you, Cory, and the community in Logan, a solid assurance that we are doing everything within our power to rectify this wrong, to have a final say for Joan," he said.
"All victims need a final say and we will ensure that that comes."
Police released CCTV footage earlier on Thursday of two groups of people they said weren't suspects, but could help the investigation because they were in the vicinity when Mrs Ryther was murdered.
Detective Superintendent Dave Hutchinson said investigators had no prime targets, but were sifting through about 700 leads from the public.
The memorial service was organised by the Centre Against Sexual Violence, situated on the same street where the Rythers lived.
Mrs Ryther's co-workers and counsellors at the centre also spoke of the loss.
"You were just the most beautiful, energetic, bubbly and fun-loving person I've ever met," her manager Stephanie Brooks said.
"I know you'll be watching over and listening to everyone you have touched the lives of."
Mr Ryther told the crowd he planned to return his wife's body to her native Philippines, so it could be laid to rest near her family.
He asked for donations to make the trip possible.