| In 1920 Lazo and a few other Red Army commanders were arrested by Japanese troops, and they all disappeared. Nobody knows for certain what ever became of them. |
Technically, he wasn't Red Army, but rather a leader of Communist Partizan movement in the Soviet Far East. The legend would have it that either he was burnt alive by Japanase in locomotive furnace, or chopped up to pieces and then burnt in a locomotive furnace. Given the Imperial Japanese troops penchant for violence and torture in their most basic and vile forms neither story would surprise me a lot if proven true.
Regards,
Sergey