Finland's gun policy is under scrutiny after a school shooting north of Helsinki.

A 12-year-old boy has been detained after the shooting that left one dead and two others, all aged 12, seriously wounded.

Finland's education minister says that once the government has a complete picture, they're considering if further measures are needed to protect schools.

Europe correspondent Gavin Grey told Mike Hosking that it's believed the gun used was licensed to a close relative.

He says in Finland, anyone over 18 can own a gun after passing checks, but a child over 15 can have licences to use other people's firearms.

The 12-year-old thought to be responsible is in the care of social services.

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