The man was arrested shortly after the cortege left the Oslo City Hall, where the Nobel ceremony was held. He was arrested for carrying a knife, said the Norwegian police to NRK.
The man who is in his late twenties, began to walk toward the motorcade where government leaders set, then the police stopped him.
The security of this year’s Nobel Peace Prize is at the highest level. The police are expected to spend between 10 and 17 million NOK on security measures in connection with the ceremony.
Large parts of the city center has been closed off and heavily armed police patrol the area around the city.