A large fire is currently burning in an apartment building in Märsta, a town located just outside of Stockholm, Sweden. Emergency services report the fire is fully developed, indicating a significant level of intensity. There is a risk of the fire spreading through the roof of the building, potentially impacting adjacent structures. Firefighters are actively working to contain the blaze and prevent further escalation. The extent of damage and any potential injuries are currently unknown. Authorities have not yet released information regarding the cause of the fire or the number of residents affected. Further updates will be provided as the situation develops.