The martyrdom of Yúsuf Subhání in Ivín Prison in Tehran. For an account of his execution and the events leading up to it see The Account of the Martyrdom of Mr. Yusuf Subhání, 10 June 1980 written by his brother-in-law, Jálál Khánimání. [World Order, Series2, Volume_17 Issue 1 p12-18]