As reported by Censor.NET citing the separatists- and Russian government-run media outlets, Mamiev was eliminated near Avdiivka’s industrial zone late on May 17. He reportedly received severe shrapnel wounds to the head, abdomen and chest in a projectile explosion.
It is noted that Mamiev was born in North Ossetia. He has been fighting in the ranks of the separatists from 2014. His detachment dubbed Piatnashka "defends" one of the sections of the forefront on the outskirts of Donetsk.
On Feb. 8, 2017, commander of separatists’ Somali battalion Mikhail Tolstykh (aka Givi) was killed in explosion that rocked his office in Makiivka.
On Oct. 16, 2016, commander of separatists’ Sparta battalion Arsen Pavlov (aka Motorola) died in blast inside the elevator.