Peak-time chaos: Police investigate railway vandalism

Police are investigating the vandalism between Yarraman and Dandenong railway stations that sparked commuter chaos on the morning of Wednesday 1 April.

Transit Divisional Response Unit officers say offenders cut cabling and caused damage about 4.30am.

It led to thousands of morning passengers lining up for replacement buses as Pakenham and Cranbourne rail services were suspended.

The disruption marred the second day of the State Government's month-long period of free public transport.

Long lines of city-bound commuters disembarked at Dandenong station to wait for replacement buses, which also picked up passengers at stations between Yarraman and Oakleigh.

Commuters were being advised to drive to Glen Waverley station or a Frankston line station to avoid the queues.

Investigations into the vandalism are ongoing, police say.

Any information or footage to Crime Stoppers on 1800 333 000 or crimestoppersvic.com.au