A massive explosion rocked downtown Oslo on Friday, killing at least two people, injuring several others and causing widespread damage in Norway's government center, news reports said.
The Norwegian public broadcaster NRK reported that police believe the blast was due to a bomb. News agencies said the twisted, charred wreckage of a car could be seen close to the blast site.
The explosion occurred near Prime Minister Jens Stoltenberg's office, but Norwegian media said Stoltenberg was safe.
Video footage showed streets littered with shattered glass, documents and other debris as terrified people fled the scene to safety, heading away from Oslo's normally bustling downtown.
Nearly all the windows of one multistory building appeared to have been blown out. Another building was on fire. A huge plume of smoke rose into the sky.
