Train services on Perth’s Mandurah Line are experiencing major delays after a technical issue, with commuters being advised to expect disruption during Monday peak hours. Both outlets report that the delays are significant and affect travel across the broader network, suggesting the problem is not limited to a single station or short segment of track. Passengers are being told to prepare for the worst as service disruptions continue, though the reports do not specify the exact nature of the technical fault or provide a confirmed timetable for restoration. The information presented is consistent across sources: a technical issue is cited as the cause, and the impact is described as substantial during peak commuting periods. Further details such as duration, number of affected services, and when normal operations resume are not included in the supplied summaries. Overall, the reports focus on the immediate disruption and passenger guidance for Monday travel.