TRAIN crews have called in sick to work on the day of Scotland's big match, plunging fans into travel chaos. 

Services have been cancelled due to a lack of staff, ScotRail warned on Twitter this morning. 

Supporters are advised to check if their routes are still running ahead of Scotland's showdown at Hampden tonight. 

If Scotland secure a win against Croatia, they will be through to the final 16 of the Euros, making the game unmissable for fans. 

It is not clear what services are affected but the rail operator especially advised fans heading to the South Side stadium to check the status of their journeys. 

A ScotRail spokesman assured customers there would be "more than enough services, and more than enough seats for customers". today.