A 13-year-old teenager, Maksym Hlusenko, is fighting for Russian-led militants in the occupied territory of Donbas, eastern Ukraine.
He has been included in Ukraine's Myrotvorets (Peacekeeper) Center database, which lists individuals who pose a threat to the country's security. It is reported he has fallen "victim to psychological violence."
"He was turned into a non-adult militant under the influence of Russian propaganda," the website said.
It is known his father, Oleksandr Hlusenko, serves as a militant in the 1st assault group of the so-called "Zarya People's Liberation Battalion."