Video seized by police investigating alleged murder of Tyla Cox and her baby Murphy by husband Matthew in their Rockhampton home – as new detail about his romantic past is revealed

Police have seized video outside a property where a mother and her newborn were allegedly murdered, as new details about the father’s romantic past may be revealed.

Tayla Cox, 30, and her 11-week-old daughter Murphy were found dead in their Rockhampton home in central Queensland by police on Thursday morning.

The discovery of the “confrontation” came after Matthew Cox, Tayla’s husband and the baby’s father, flew to Brisbane, where he turned himself in to a local police station.

Police believe the mother and daughter died on Tuesday afternoon.

Forensic officers have removed a SIM card from a CCTV camera at the front of the property.

Distraught Rockhampton residents have left flowers and teddy bears at the site of the tragedy.

Now Daily Mail Australia can reveal that forensic officers removed a SIM card from a CCTV camera at the front of the property.

Police have spent the past three days combing the suspected crime scene, and on Saturday they were seen examining the property’s dumpsters and his mailbox.

While it is unclear how the mother and her baby met their tragic end, it is understood that police removed an alleged weapon from the home.

Detective Superintendent Darrin Shadlow told reporters Thursday that the mother and baby had lacerations on their bodies.

“I will say that it was quite a confrontational scene,” he said, according to the alphabeth.

Mr. Cox poses with his young daughter in a newly discovered photo, taken just three weeks before his alleged murder.

“There was a large amount of blood.”

Police are also believed to have been using luminol, a chemical capable of detecting small traces of blood, in the bathroom on the property.

On Friday, it was revealed that Cox had sought mental health treatment at Rockhampton hospital more than a year ago.

Daily Mail Australia understands that Mr Cox was previously engaged to be married to another woman.

Mr Cox and his ex-fiancée, who was also from Rockhampton, were due to marry in October 2015, but the wedding was mysteriously called off just weeks before.

In December 2015, Cox and Tayla announced their relationship to friends and family on Facebook. It is understood that they met while working at Flight Center and married in 2021.

This publication does not suggest that there were crossovers in the relationships.

It comes as new photos surfaced of Cox smiling next to her newborn daughter just three weeks before she was allegedly killed.

Other images show the new parents posing alongside delighted family members cradling the newest addition to the family.

Tayla is the 43rd Australian woman and Murphy Margaret the 10th child to be killed in Australia this year.

Mourners left teddy bears inscribed with messages to the unsuspecting victims outside the home.

Forensic officers removed items from the home for the third day in a row

A steady stream of devastated locals poured into the rural town’s quiet cul-de-sac on Saturday to drop off flowers and teddy bears.

Local councilor Donna Kirkland, who laid a bouquet of flowers, said Ms Cox’s family were “beautiful people” well known in the community.

“It’s a reminder to ask people, ‘Are you okay? How are you coping?'” he said.

“New moms with little babies go through a lot, and sometimes it’s a very lonely space when it’s your first child.”

Matthew and Tayla Cox pictured together

Her home is now a supposed crime scene, and the site offers floral tributes for the dead mother and child.

Neighbor Cherie Stickley, 43, who has lived on the street her entire life, said police asked her if she had seen or heard anything Tuesday, but she said it seemed like a normal day.

Although he did not know the couple, who had moved in less than a year ago, he said the tragedy was a “total shock”.

“It’s not something you would expect, it’s always been such a quiet neighborhood,” he said.

“You hear stuff like this on the news, but you assume it would be in Brisbane and the big cities, not three doors down,” he added.

Grandparents Allister and Katrina Clein attended the venue with their three granddaughters to put up teddy bears.

“It’s so tragic for something like this to happen to an innocent mother and child,” Mr Clein said.

Mr. and Mrs. Cox announced their relationship on Facebook in December 2015

Matthew Cox (left) will appear in a Brisbane court on Friday in the death of his wife (right) and their baby. In the photo, the couple in happier times.

Cox and his wife lived for a time in Victoria, where he grew up, but moved back to Rockhampton in November 2022 when he got a job as a TV account manager with media firm Southern Cross Austereo.

At the time, Ms. Cox announced on Facebook her joy at buying a house together.

“New chapter, can’t wait to make so many amazing memories with our beautiful little family,” Tayla wrote.

Police claim that Cox allegedly murdered his young family on the afternoon of August 8 and flew to Brisbane that night, where he stayed at the four-star Constance Hotel Fortitude Valley.

Two days later he turned himself in at the local police station, and the police rushed to his Rockhampton to make the grim discovery.

In the aftermath of her tragic death, Tayla has been praised for her “lively spirit and positive attitude” by her former school, St Ursula’s College in Yeppon.

“During her time at the university, Tayla was a beacon of hope, joy and love, and she had such a positive impact on others in the community at large,” said the school’s principal, Deborah Ryan.

A steady stream of devastated locals poured into the rural town’s quiet cul-de-sac on Saturday to pay their respects.

Forensic investigations continued for the third day since the gruesome discovery.

The young mother, who also ran an art page, was described as the ‘Rockhampton Miley Cyrus’ by her friend Rachel Titmarsh.

‘My favorite memories with Tayla were singing karaoke. Oh the days… May you both rest in peace,’ she wrote.

Rockhampton Mayor Tony Williams said he had a “heavy heart” over the tragedy.

“I have a personal relationship with the family and I know how difficult it is for the family right now,” he said.

On Friday, Daily Mail Australia revealed that Cox is the son of a high-flying executive who once described himself as the “King of Meat” in Rockhampton, Australia’s beef capital.

Cox’s case was adjourned until August 21.

In a statement, Cox’s parents said they were devastated by the news.

“We have lost a beautiful daughter-in-law, Tayla, but also our much loved granddaughter Murphy,” the statement read.

“Right now we have very few details and we are in absolute shock.”