Nigerian man claims his grandfather died last week at the age of 140

A Nigerian Facebook user identified as Isioma Isaac Mukeme shared photos with his grandfather, who died last week stating that he died at the age of 140. When someone questioned the authenticity of his claim,  Isioma said that his late grandfather was over 30 something years old during the First World World, which lasted from 28 July 1914 to 12 November 1918.