How did Rasputin die?

Answer 1

He was assassinated by a group of aristocrats led by members of the royal family, the Grand Duke Dmitry Pavlovich and Prince Felix Yusupov. There are many legends about his death, but the most accepted story seems to be the following:

Rasputin was invited to Yusupov's palace, where he ate and drank food and wine laced with cyanide. He was unaffected by the poison, so Yusupov shot him. Rasputin survived this gunshot, and attacked Yusupov, so the other nobles shot him in the back three times. Rasputin still was not dead at this point, so he was clubbed by the nobles, wrapped into a sheet with his hands and feet tied and thrown into the icy Neva River. The autopsy revealed that he died from drowning but escaped the sheet and bonds

Source: Century of Change : Europe from 1789 to 1918 by E. Alyn Mitchner and R. Joanne Tuffs