26 October 2022, at least 15 people were killed in a mass shooting at Shah Cheragh mausoleum. The three attackers are described by Iranian state media as apparently being takfiri terrorists. Two attackers have been arrested; the other is at large. Later the same day, Islamic State claimed responsibility for the attack. The Iranian authorities said that the attackers are not Iranian nationals. Iranian semi-official Tasnim news agency stated that children are among the dead. The United Nations have condemned the attack on the religious site. Sayyid Alā al-Dīn Husayn Another important pilgrimage centre in the historical city of Shiraz is the mausoleum of Sayyid Husayn, another son of Mūsā al-Kādhim. This mausoleum is located near the south-east corner of Shiraz. The mausoleum itself is a tall building bearing a lofty dome. The original entrance was on the south side, approached by a small courtyard from the road that runs beside it. On the western side there is an area, more or less spacious, which was formerly a cemetery, but is now regarded as the western courtyard of the mausoleum. The mausoleum's interior consists of a tall sanctuary ornamented with designs in facets of mirror beneath the dome, and the tomb, as in the other places of pilgrimage in Shiraz, is situated in an alcove on the northern side, and there is a mosque adjacent to the sanctuary behind the railing of the tomb. The original building of the mausoleum was constructed by Qotlogh Khan, who in the Ilkhanate and Timurid period, at the close of the fourteenth, or at the beginning of the fifteenth century, was Governor of Shiraz, and had a garden where the present mausoleum stands, which was built over the site where the grave appeared to be. There is an inscription in Sols (Thuluth) script above the sanctuary, dated 943 A.H. (1563 AD), the writer of which was called Seyavash. The present Shrine was built in 923 A.H. (1517 AD). The Soltan Khalil mentioned is Soltan Zu'l-qadr who during the reign of the Safavid Shah Isma'il I was for fifteen years, from 911 to 926 A.H. (1505–1519 AD), Governor of Fars, and who according to what is written in the Naseri Fars-Nameh, on account of misconduct at the battle of Chalderan, was by order of Shah Ismail put to death in 926 A.H. The year 943 A.H., mentioned at the end of the inscription above the