OSLO, Norway (AP) -- A loud explosion shattered windows Friday at the government headquarters in Oslo which includes the prime minister's office, injuring several people.
Prime Minister Jens Stoltenberg is safe, government spokeswoman Camilla Ryste told The Associated Press.
Witness Ole Tommy Pedersen was standing at a bus stop about 100 meters (yards) from the high-rise at around 3:30 p.m. (1330GMT) when he saw the blast shatter almost all windows of the 20-floor highrise. He said a cloud of smoke is billowing from the bottom floors.
"I saw three or four injured people being carried out of the building a few minutes later," Pedersen told The Associated Press.
Nearby offices were evacuated including those housing some of Norway's leading newspapers and news agency NTB. An AP reporter at the scene saw one person with a bleeding leg being led away from the area.