A massive fire broke out at a commercial building in Ryen, Oslo, causing significant disruption on Tuesday evening.

The blaze, which started on the roof, produced thick black smoke that blanketed the area.

Authorities issued an emergency alert, urging residents to keep windows closed and avoid the vicinity.

The Ryen T-banestasjon and nearby bus stops were shut down as a precaution.

Firefighters worked through the night to control the flames, but the fire remained active late into the evening.

Police maintained roadblocks, and the area stayed closed to traffic.

The cause of the fire is under investigation.