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Blast rocks Norway capital

Scanpix Norway via Reuters

Debris is seen on the street after a powerful explosion rocked central Oslo on Friday, July 22. A huge explosion damaged government buildings in central Oslo on Friday including Prime Minister Jens Stoltenberg's office, injuring several people, a Reuters witness said. The blast blew out most windows on the 17-story building housing Stoltenberg's office, as well as nearby ministries including the oil ministry, which was on fire.

Thomas Winje Oijord / AFP - Getty Images

An injured man is treated at the scene after an explosion near the government buildings in Norway's capital Oslo on Friday. At least one person was killed by the powerful explosion which ripped through government and media buildings.

 Full story here: Police: At least 2 dead as bomb blast hits Oslo

As NBC's Martin Fletcher reports, an eyewitness described the scene after an explosion rocked Oslo's city center, saying smoke, chaos and injured people fill the streets.