An explosion shook Oslo's Majorstuen neighborhood Sunday morning. Emergency services responded to reports of a blast around 9:30 AM. Police immediately established a security perimeter around Middlethuns Street.
The operation leader confirmed they believe a gas pipe or similar infrastructure caused the explosion. Initial investigations point to a liquid nitrogen tank in the building's basement as the source.
Police closed Middlethuns Street between Kirkeveien and Essendropsgate following the incident. They worked with fire services to assess evacuation needs but ultimately determined building evacuation wasn't necessary.
Operation leader Gabriel Langfeldt provided reassurance about the situation. "The fire department considers the risk of another explosion low at this time," he said. "They're working to secure the gas tank."
Road closures will remain in place to give emergency crews space to work safely. No injuries have been reported despite the forceful explosion.
A neighbor living next to the affected building described the scene. "I didn't hear any explosion," Thomas Borgvang said. "But I heard massive emergency vehicle sirens, so I had to go out and see what was happening."
Police emphasized they have no indication this was anything other than an accident. They established a substantial security zone around the area while investigations continue.
Majorstuen is one of Oslo's busiest residential and commercial districts, making this incident particularly disruptive to Sunday morning activities. The quick containment by emergency services prevented what could have been a more dangerous situation in the densely populated area.