"A terrible crime. My condolences to the loved ones of the murderer's victims. I wish resilience for the wounded. Credit to the officers for quickly apprehending the perpetrator," Reinsalu (Isamaa) wrote on social media.

"The murderer must stand trial without delay and be handed the toughest possible punishment. How a person who, according to the authorities, has committed a crime in the past had a weapons permit needs to be thoroughly ascertained," he added.

Previously, the suspect was convicted of firing shots at an apartment building wall using an unlicensed Parabellum P08 pistol in 2008. There were people in the building and the shots hit the kitchen windows of two apartments, which is why the perpetrator was convinced of aggravated breach of public order. He was ordered to pay a fine.

The same ruling also found the man guilty of possession of explosives after 38.91 grams of the explosive penthrite was discovered in his home.

The suspect has no valid punishments and had valid weapons permit at the time of the events on Saturday evening.

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