A grenade was thrown at a government building in the Samara region of Russia, APA's Russian bureau reports.
The governor of the Samara region, Vyacheslav Fedoryshev, reported this.
According to him, there were no casualties or injuries as a result of the incident.
Pavement slabs were damaged as a result of the explosion.
The person who threw the grenade was detained. The motives of the incident are being investigated.