Every other K train is cancelled on Tuesday 22 January 3pm-7.01pm.
K trains depart from Kerava and Helsinki at 01, 21 and 41 minutes past the hour. Other services are cancelled.
The cancellations are due to a rail system failure and earlier service disruptions.
The cancelled services show in the Journey Planner's search results.
The trains are expected to resume normal service rom 7.01pm.