Complex sentence: It was closed down in September 2011 due to the publication of a digital picture which mocked former President Mahmoud Ahmedinejad and his confidant Esfandiar Rahim Mashaei.
Split into simpler sentences: It was closed down in September 2011. The reason for the closure was the publication of a digital picture which mocked former President Mahmoud Ahmedinejad and his confidant Esfandiar Rahim Mashaei.