The Finnish peacekeeping force in Lebanon confirmed STT that the soldier had injuries to almost all the parts of his body.
However, Armed Forces sources said the condition of the soldier was stable.
It is not clear how the soldier got hurt and there had not been any witness either.
Investigations have made things more complicated because the incident took place in one of the bases that was less frequented by Finnish soldiers.
The injured soldier was working in the UNIFIL mission at its headquarters in Naqoura in Southern Lebanon.
UN mission working in Lebanon has 11,000 peacekeepers and a thousand civilians. Presently, about 330 Finnish peacekeepers are working in the mission.
