Image: YLE

Police are to continue a normal criminal inquiry into the two incidents, which will focus on the bomb’s trigger mechanism, and how dangerous the devices really were. They will also look into the anarchists' claim of responsibility, but would not comment publicly on the matter.

Police were notified on Friday morning of a suspicious canister in the Pasila district and cordoned off the area in case there was an explosion.

Both the Pasila bomb and the Tapaninvainio incident sparked rumours of Islamist involvement after they were hailed by a well-known Islamist blogger at the weekend.

Police tight-lipped on extremist link to Helsinki explosives devices