Father asks "who killed my daughter?"

A father is appealing for help to solve the murder of his daughter four years ago.

Phillip Crossthwaite found his daughter Cindy lying in a pool of blood with severe head injuries just after 4pm on Wednesday, June 20.

Her 13-month-old son was crying, and locked in a bedroom at their Melton South home.

The 41-year-old victim was last seen dropping her 10-year-old daughter Jesmine and eight-year-old son Nicholas off at Coburn Primary School around 9am on the same day.

The brutal murder case remains open, and today the Mr Crossthwaite, who raises his three grandchildren, joined homicide detectives in a renewed public plea to find his daughter's killer.

He said: "We need assistance to have this case closed. Until somebody has been charged for Cindys murder, we will never have closure.

"The children will never have closure. The kids ask me 'why has this happened to us?'. Until we find the perpetrator they can't have a reason for it."

Cindy Crossthwaite was found dead by her father four years ago.
Cindy Crossthwaite was found dead by her father four years ago.

Detective Inspector John Potter said police still hold hope of finding Ms Crossthwaite's killer.

"Four years on circumstances change and someone who may not have felt they could speak to police before may now be ready to talk," he said.

“The smallest piece of information can make the biggest difference to an investigation.

“We are trying to provide Cindy’s family with some answers about what happened on the day of her death.

“Four years is a long time to spend not knowing what has happened and it is absolutely tragic.”

Detectives also received reports at the time that a person was seen loitering near Cindy’s home on the morning of her death.

Police also believe this same person was seen loitering around her street the previous morning.

Witnesses have described the man as being aged in his 40s with a tanned complexion, 178 cm tall with a medium to stocky build.

He had dark hair and may possibly have had facial hair.

He was described as wearing dark clothing and a dark coloured beanie on both occasions.