The AP reports that a 12-year-old student opened fire at a secondary school in southern Finland on Tuesday morning, killing one and seriously wounding two other students. The shooter was later apprehended.

The incident occurred around 9:08 a.m. at a large educational institution, including lower and upper secondary schools, with a total of about 800 students in the city of Vantaa, just outside the capital, Helsinki. All victims were approximately 12 years old.

The weapon used in the shooting was a registered handgun licensed to the suspect’s relative. The shooter was detained in the Helsinki area with a handgun in his possession and admitted to the shooting. There is no immediate word on the motive, police said, adding that the case is being investigated as a murder and two attempted murders.

The minimum age of criminal liability in Finland is 15 years, which means the shooter cannot be formally arrested. A suspect younger than 15 can only be heard by the police, after which they will be handed over to Finland’s child welfare authorities.

Despite restrictive gun laws, Finland has witnessed two other deadly school shootings. In 2007, an 18-year-old student armed with a pistol killed nine at Jokela high school in Tuusula, southern Finland.

Less than a year later, in September 2008, a 22-year-old student shot and killed ten people with a pistol at a vocational college in Kauhajoki, southwestern Finland, before fatally shooting himself.

Finland has strict gun laws consistent with EU regulations, which have been enhanced after earlier shootings. Legal firearms in Finland must be registered and licensed on a per-gun basis. None of these incidents involved what is described as an “assault rifle,” despite the significant casualties.