According to the Federal Security Service, the teenager planned to use an improvised explosive device.
"The FSB has prevented a terror attack in the city of Tambov. A Russian citizen, born in 2003, was detained for plotting the attack", the FSB said in a press release.
The young man, who was "a supporter of destructive subcultures", obtained instructions for making the bomb online.
Explosives and components for creating a bomb were seized from the apartment he rented. Authorities launched a criminal investigation into the incident.