A major court hearing has begun in Rockhampton Magistrates Court for Matthew James Cox, who is accused of murdering his wife Tayla Black and their 11-week-old daughter Murphy Margaret Cox at their home in Park Avenue, Rockhampton, in August 2023.
Cox, aged 34, is facing two counts of murder over the deaths of his wife and baby daughter. The allegations relate to an incident in which police discovered Tayla Black and baby Murphy deceased inside their Rockhampton home after Cox attended a Brisbane police station and reported the deaths.
The current hearing is focused on gathering evidence before the matter progresses further through the legal system. A number of witnesses, including family members, friends and former colleagues, are expected to give evidence about Cox’s behaviour, background and events leading up to the alleged killings.
The court has heard evidence relating to Cox’s mental health history, including a hospital admission approximately 10 months before the alleged murders. Defence lawyers are examining information about his mental state as part of arguments that may be relevant to his legal responsibility.
During the hearing, Tayla’s family members provided evidence about their relationship with Cox and changes they noticed over time. Some relatives described him as becoming more distant after his hospitalisation, while others said they had not noticed significant changes in his behaviour.
The court also heard evidence about Cox’s movements and actions on the day of the alleged incident. Prosecutors have presented details about his workplace communications and events that followed before he travelled to Brisbane and surrendered himself to police.
The defence has indicated that mental health evidence will be an important part of the proceedings. Lawyers are seeking testimony from witnesses who interacted with Cox around the time of the alleged offences to assist with psychiatric assessments.
Cox remains in custody and has not entered a plea in relation to the charges. The allegations against him have not been proven, and the matter will continue through the court process before any final determination is made.
The deaths of Tayla and Murphy shocked the Rockhampton community, with family and friends remembering them as a loving mother and young child. The case has also renewed discussions around domestic violence, family safety and the importance of mental health support.
Authorities have continued to emphasise that court proceedings must be allowed to run their course. Because the matter is before the courts, many details remain restricted and will be tested through evidence presented during the legal process.
The hearing is expected to continue as prosecutors and defence lawyers present further evidence. The outcome of the proceedings will determine whether the case progresses towards a trial.
