A huge explosion outside the government headquarters building in Oslo, Norway on Friday has left several injured and at least one person dead. The enormous Oslo explosion tore into in the 20-story government building, which houses the prime minister’s office, and damaged several other nearby buildings. The explosion also ignited a fire in a six-story building housing the oil ministry.

“There has been one or several powerful explosions in the government district in Oslo,” Oslo police said in a press statement. “So far, police cannot say anything about the scope of the damage, aside from that there’s been one or several explosions.”

An official cause of the Oslo explosion, which occurred shortly before 3:30PM local time, has not yet been determined. The street next to the damaged buildings was piled with debris and the blackened, smoking wreckage of a car can be seen in some photos and video from the scene. This has lead some to speculate the explosion may have been a car bomb terrorist attack.

Oslo explosion aftermath video footage – YouTube.com

Witness accounts are conflicting at this point and it is unclear whether there might have been more than one explosion. Some at the site have reported hearing one large explosion, while others have stated they heard at least two loud bangs.

Norwegian State Secretary Kristian Amundsen told the BBC that officials believe “there are still people in the buildings” damaged by the explosion. “I can’t go into details,” he said.

Prime minister Jens Stoltenberg was not in his office at the time of the Oslo explosion and is safe, a government spokesperson said in a press statement. However, several others were injured and at least one person was killed.

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