The lawyer who helped organize the marriage of an Iranian youth in prison, executed on 5 October in connection with the demonstrations in January, was arrested, reported on Monday by human rights groups. Alireza Sepahi, 25, had married on the eve of her hanging with Mahshad Kashani, 22 years old and also imprisoned, during a telephone ceremony held by their lawyer in the presence of their respective fathers, both of whom had been arrested earlie…