Western Australian authorities are investigating the sudden death of a woman following a roadside random breath test in Geraldton, a coastal city approximately 400 kilometres north of Perth. The incident occurred on Monday evening, 19 October,

According to police, officers from Geraldton were conducting random breath testing on Brand Highway in Mount Tarcoola when they stopped the woman, who was in her 50s. The stop took place shortly before 7 pm.

Police said the woman was issued a driving prohibition notice and released from custody following the roadside test. The reason for the prohibition notice was not fully detailed in the initial report.

Shortly afterwards, the woman began experiencing a medical problem. A Western Australian Police spokesperson said officers offered assistance, but the woman initially declined that offer. As a precaution, police contacted St John WA for medical assistance.

The woman's condition subsequently deteriorated, and she became unresponsive. Officers at the scene began administering first aid while waiting for paramedics to arrive.

St John Ambulance personnel reached the scene approximately 10 minutes after the initial call for assistance. The woman was transported to Geraldton Regional Hospital under priority-one conditions, indicating that she required urgent medical attention.

Despite those efforts, she was later declared dead at the hospital shortly after 8.20 pm.

The death has prompted a formal investigation by the Western Australian Police Internal Affairs Unit. The unit is responsible for examining the circumstances surrounding the incident because the woman died following contact with police.

Authorities have classified the matter as a death in police presence. This classification does not, by itself, establish that police actions caused the death or that any officer acted improperly. The investigation is intended to establish the relevant facts.

Investigators will need to examine the timeline of events, including the roadside interaction, the woman's medical episode, the assistance offered by officers and the emergency response. Medical evidence will also be important in determining the cause of death.

A report is expected to be prepared for the coroner, who can examine the circumstances and cause of death. Further details may become available as the investigation progresses.

The incident highlights the importance of timely medical assessment when a person experiences a sudden health problem, particularly after an encounter with emergency services or law enforcement. It also demonstrates why independent scrutiny is used when a death occurs in police presence.

At this stage, authorities have not publicly established the medical cause of the woman's death. It would therefore be premature to draw conclusions about whether the roadside breath test, the driving prohibition notice or any other aspect of the encounter contributed to the medical emergency.

The Internal Affairs Unit's investigation will be central to clarifying the circumstances. Any conclusions will depend on the evidence gathered, including medical findings and accounts of the events leading up to the woman's hospital admission.

For the Geraldton community, the case is a serious incident involving a sudden death and a police investigation. Authorities have not announced any findings of misconduct, and the circumstances remain under examination.