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Copyright of the image
Reuters
The boy, photographed on CCTV, was then named Mikhail Zhlobitsky
A 17-year-old official has died as a result of the explosion of explosives in an office of the Russian Federal Security Service FSB in Arkhangelsk, in the north-west of the country, officials said.
Three FSB employees were injured when the explosives exploded just inside the building, around 09:00 (06:00 GMT).
The explosion caused serious damage.
An image of the suspect under CCTV appeared shortly thereafter, accompanied by a message that he would have posted on social media just before the blast.
Although the authenticity of the message posted on an anarchist discussion group has not been confirmed, the user identifies as anarcho-communist and claims that the FSB " makes cases and tortures people ".
According to preliminary findings of the Russian anti-terrorist committee, the suspect was a 17-year-old who had entered the building and removed from his bag an "unidentified object that had exploded in his hands".
He was then named Mikhail Zhlobitsky, a student at a local technical college. Her grandmother told BBC Russian that she could not understand why he blew himself up.
"He does not drink and smoke, and he does not swear he does not play truant – he still goes to college – I have no idea what happened "she said.
The explosion has been described as a terrorist attack. Governor Igor Orlov said local authorities in Arkhangelsk, about 1,200 km north of Moscow, had taken measures to increase security in all public buildings.
Attacks on security services are rare in Russia, although police have been targeted in parts of the Caucasus, including Chechnya and Dagestan.
The FSB has been behind two controversial cases this year against groups accused of planning violent uprisings, reported Sarah Rainsford of the BBC, from Moscow.
In both cases, human rights groups claimed that the statements were false, while statements had been extracted under torture.
