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Three children aged 13 have been wounded in a shooting at a school in the Finnish city of Vantaa, police say.
Police say they responded to the incident at Viertola school before 09:00 (06:00 GMT) on Tuesday and urged local residents to remain indoors.
A suspect, who police say was also aged 13, has been arrested.
The school has 800 students and 90 staff.
In common with other Finnish schools, children had just returned to classes in Vantaa, north of the capital Helsinki, after the long Easter weekend.
The school has students aged seven to 15 of both primary and middle-school age on two separate sites.