The answer is true, Gandhi was assassinated.
Mahatma Gandhi was assassinated on January 30, 1948 in New Delhi, India by Nathuram Vinayak Godse. Nathuram was a right-wing advocate and shot Gandhi three times in the chest.
Gandhi's last words went something along the lines of, "Hey Ram" (In English, this translates to "Oh God!"), though there is controversy around what he said exactly because of the fact there is no concrete evidence as to what he said.