The Mandurah line operates with partial disruption after a serious incident at Rockingham Station. Multiple outlets report that the incident is the cause of delays affecting services on the line. As a result, the service is not fully running in its normal pattern while operational adjustments are made. The reports indicate that the incident at Rockingham Station is responsible for the disruption, though specific details about what occurred and any impacts beyond delays are not provided in the available summaries. Authorities and the transit operator are expected to manage the incident response and communicate further updates as conditions change. In the meantime, commuters are advised to anticipate delays and possible changes to service arrangements on the Mandurah line due to the partial closure.