Three youths have been arrested on suspicion of involvement in a fire in a train, possibly caused by fireworks, Utrecht local television reports.
The fire appears to have started in the area between two compartments on an intercity train travelling from Breukelen to Abcoude.
The train, which was carrying around 90 people, was evacuated and no-one was injured. Photographs of the fire show heavy black smoke belching across the countryside.
The track between Utrecht and Amsterdam has been closed because of the fire and trains are being diverted via Hilversum.