Despite a high level of security introduced across Poland because of the country's support for neighboring Ukraine amid Russia's invasion, police released the men. That has raised questions, more so because the phone numbers they gave turned out to be inactive.
Morawiecki, asked about the matter, said he had commissioned Poland's secret services to take a close look into it.
“Of course, it may be that they are dangerous people, but it may turn out that these are not dangerous people and what they have declared is true,” Morawiecki told reporters.
He stressed that Poland had increased its level of supervision of strategic infrastructure following Russia's invasion of Ukraine on Feb. 24, but is also reviewing security protocols again.
“It is obvious that amid the war in Ukraine, when the risk of sabotage by Russia increased immeasurably, it was necessary to strengthen the supervision of critical infrastructure. We are also reviewing this supervision,” Morawiecki said.
In raising their concerns, experts are pointing to the underwater explosions last summer that damaged the Nord Stream pipelines that run on the Baltic Sea bed and were to carry Russian gas to Germany. Swedish and Danish authorities have said the leaks were sabotage.
Some media in Poland were suggesting the three divers might have been involved in a smuggling ring and could have been searching for contraband.