OSLO (Reuters) - Norwegian police said that a bomb caused the explosion in central Oslo Friday, news agency NTB reported, quoting a police chief.
State broadcaster NRK radio said two people were now confirmed dead, raising the initial toll from one.
"So far I can confirm that we have received seven people at Oslo University Hospital," a press officer at Oslo University Hospital told Reuters. "I don't know how seriously wounded they are."
(Reporting by Oslo newsroom)