Jurij Gričenko

Jurij Gričenko, also known as the 'Hammer Killer,' is a 63-year-old serial murderer from Zelenograd, Russia, who was convicted of killing at least five people, primarily women, with a hammer. Despite being diagnosed with schizophrenia and exhibiting violent behavior in prison, he was released in 2023 and recruited to serve in a military unit in Ukraine.