Residents of Tehran, the Iranian capital, express their sadness at the death of President Ebrahim Raisi, who was one of nine people killed in a helicopter crash. The ultraconservative leader's death was confirmed on Monday 20 May after rescue crews located the wreckage of his aircraft in a foggy mountainous region. Five days of mourning have been declared in Iran, with condolences flooding in from Palestinian militant group Hamas, Lebanon's Hezbollah and from Syria.