Ruks backed the claim that the attack was planned by saying: "It's not like people walk around with Molotov cocktails in their pockets so that they could suddenly use them somewhere."
He added that there was reason to think the attack wasn't just individually planned but there had been some external influence. He did not disclose any details in the interests of the investigation but said it was presumed "handcuffs will be placed on someone else too".
Asked about potential similar crimes in the future, Ruks said: "It is obviously not done because of love for Latvia, love for Latvian people. Of course we count on it and we know the risks. [..] We will not allow free action and endangerment of our people."
On Sunday, March 3, police detained three persons suspected of throwing a Molotov cocktail into the office of the Occupation museum's director Solvita Vība days earlier.