Thunderous explosion shattered windows Friday at Government House in Oslo, which includes the Office of the Prime Minister, injuring several people - Oslo, Norway.
He said government spokeswoman Camilla Ryste Norwegian Prime Minister Jens Stoltenberg is safe, the Associated Press. There was no immediate word on the cause of the explosion
The first witness, Tommy Pedersen, standing at a bus stop about 100 meters from the high-rise at about 3:30 pm (1330 GMT) when he saw the explosion shattered windows, almost all of the 20-storey skyscrapers. He said that a cloud of smoke rising from the lower floors.
"I saw being three or four people from the building after a few minutes," said Pedersen, The Associated Press.
The video, shown by the Norwegian broadcaster NRK in most of the blown out windows of the building. It appears in the basement to be completely destroyed. And the scattered fragments of broken glass and debris field in front of the building.
Nearby offices were evacuated, including those housing some of the leading newspapers in Norway, news agency NTB. It also damaged some of them.
A Reuters reporter who was in the building office NTB shaken by the blast and all the staff who were evacuated from the building while the alarm went off. At the bottom of the street and saw someone with one leg he was taken away bleeding from the area.
Government building houses the office of Prime Minister and his government. Several ministries are in the surrounding buildings.
The blast comes in the Scandinavian country and wrestled with a series of domestic terrorist plots linked to al Qaeda, after six years of uproar over cartoons of the Prophet Muhammad in neighboring Denmark.
Last week, the Norwegian prosecutor charges of terrorism against Iraqi-born cleric, on charges of threatening politicians and Norwegian death if deported from the Scandinavian country.
The indictment focuses on the statements by Mullah Krekar - founder of the Kurdish Islamist group Ansar al-Islam - which had been made to various media, including the American network NBC.
Danish authorities say they have foiled several terrorist plots linked to the cartoons of the 2005 of the Prophet Muhammad that sparked protests in Muslim countries.
Last month, the Danish Court of Appeal ruled on Wednesday, a Somali man to 10 years in prison for breaking into the home of cartoonist who depicted the Prophet Muhammad.
