Significant fire reported at Helsinki prison on Ristikkokatu

A significant structural fire has been reported on Ristikkokatu in Helsinki, shortly before 4 PM. Authorities have confirmed that the blaze occurred at the Helsinki prison. The on-duty fire chief noted that smoke is visible at the scene. Emergency services are currently investigating the situation and searching for the source of the fire. Initial response teams have arrived at the site and have begun their inquiries. Further updates are expected.