Polish law enforcement authorities have collected evidence that will help investigators quickly identify suspects in a weekend sabotage attack on a national railway line, cabinet officials said Monday evening.

Polish government ministers held a joint press conference on Monday to discuss the incidents on a railway line in the country's southeast. Interior Minister Marcin Kierwiński confirmed that an explosive device was"without a doubt" used in the attack.

At a press conference, which was also attended by Justice Minister Valdemars Žureks, Infrastructure Minister Dariusz Klimczak, and Special Services Coordinator Tomasz Siemoniak, the Minister of the Interior said that surveillance camera footage from the area had been collected.

Kierwiński added that “a lot of evidence,” including CCTV footage and other materials, “will certainly help to identify the perpetrators of this terrible act of sabotage very quickly.”

Polish Justice Minister Waldemar Żurek announced that suspects could face prison sentences ranging from 10 years to life imprisonment for this act.

The Polish government's National Security Committee met on Tuesday morning to discuss the incident. The meeting was attended by the heads of the army and special services, as well as a presidential spokesman.

"We will ensure that the perpetrators and those who ordered this attack are brought to justice in Poland," the justice minister added.

Several sections of a strategically important railway line between Warsaw and the southeastern Polish city of Lublin, which is used to deliver aid to Ukraine, were reportedly damaged over the weekend. Donald Tusk described one of the incidents as an attempt to blow up a train and called the attacks “unprecedented sabotage” against Poland and its citizens.