Norwegian law enforcers confirmed that the bomb was real. According to their data, the bomb could "cause serious damage to those nearby."

“This is a very serious situation for the police, unpleasant for all employees. Currently, we do not know who is behind this, ”said police spokesman Hakon Skulestad at a press conference.

The police added that in fact the incident was organized "comprehensive investigation".

Earlier in an apartment in north London, found two improvised explosive devices.