The teenager has admitted to committing arson attacks on railway equipment. Authorities tracked down the Vantaa resident based on tip-offs from eyewitnesses. Police will continue their questioning on Wednesday.
The station's electrical centre was completely destroyed by the fire. This caused days of delays and damage of more than 100,000 euros.
Police have not yet commented on how the fires were started. The perpetrator’s motive is also unclear. Authorities are working with social services and the boy’s parents.