X-trains in Gävleborg are canceling most of their departures on Wednesday and Thursday. 

”"At short notice, the Swedish Transport Administration has chosen to reduce train traffic on the Sundsvall-Gävle route. We are working to arrange replacement traffic," they write on their website.

Norrtåg is also canceling all its departures between Kiruna-Luleå, Umeå-Sundsvall and Luleå-Haparanda on Wednesday.

Replacement services are being introduced on most departures.

Source: Aftonbladet.se