They also arrested three people in connection with the incidents.
In one incident, one person is suspected to have illegally brought one person to the country from Sweden.
In another incident, one person is suspected to have arranged illegally entry of three people from Sweden. The suspect has pleaded guilty to the accusation.
The two incidents are not thought to be linked to each other. The pre-trial investigation related to the two separate incidents continues.
The Gulf of Finland Coast Guard District crime prevention unit has for the past two weeks opened a total of seven pre-trial investigation cases on organising illegal entry into the county.
