Three minors were convicted in Sweden on Monday of involvement in a shooting at an office of Israeli defense company Elbit Systems in Gothenburg last year, according to Reuters.

A fourth minor was spared prosecution after being accused of carrying out the shooting at the building's entrance last October, as he was only 13 years old at the time of the attack—below the age at which he can be tried under Swedish law.

The shooting did not result in any injuries, and the court did not indicate any motive for the attack.

The Gothenburg District Court said in its ruling that the boy, who was 15 years old at the time, was convicted of incitement to attempted murder and sentenced him to 20 months in a juvenile detention facility.

She said the boy persuaded the minor attacker to open fire, knowing it was highly likely to result in deaths. The boy's lawyer declined to comment on the ruling.

While the other minors were acquitted of attempted murder, we were convicted of lesser charges: aiding and abetting threats, weapons offenses, and complicity in a crime.

Swedish police said last May that they had increased security measures around Israeli and Jewish institutions in the country after officers on patrol heard what they suspected was gunfire near the Israeli embassy in Stockholm.

Sweden has witnessed a widespread outbreak of armed violence in recent years, primarily by criminal gangs.

Swedish law stipulates that the minimum age for criminal responsibility in the country is 15 years.