Belgium may prosecute people for interfering in European-wide elections as part of an effort to combat Russian disinformation, its prime minister said Friday.

“Our federal prosecutor has started an investigation which is based on the declassified report that our intelligence services have brought out,” Alexander De Croo told reporters in Brussels. “Our judicial authorities have now confirmed that this interference is subject to a prosecution.”

His announcement came after the Czech government said last month that its counterintelligence service had uncovered a Russian network trying to influence politics and public opinion across Europe, including making payments to European politicians. Prague also imposed sanctions on a local company that runs the Voice of Europe website and on two individuals linked to it. A new law came into force in Belgium last week targeting interference.

While Belgian intelligence services found that cash payments didn’t take place in Belgium, De Croo said that the interference was allegedly carried out in the country.

De Croo also called for action on the EU level, which he said he will raise at a leaders’ meeting in Brussels next week. Belgium holds the bloc’s rotating presidency.

The prime minister asked for Eurojust, the EU’s agency for judicial cooperation in criminal matters, to convene and discuss the matter urgently, as well as examine how to broaden the mandate of the European Public Prosecutors’ Office to allow for prosecuting these types of threats.

“We must remain very vigilant to any future elections and definitely related to the European election, which is happening at the beginning of June,” De Croo said. “The only intent is to weaken European democracy and to weaken the support for Ukraine, which is one of the objectives that Russia has.”