An explosion was reported behind Mount Derak in Shiraz, Fars Province, Iran, at 21:10 UTC on July 20, 2026 (00:40 local time on July 21). Vahid Online shared an image of smoke from the blast, stating:

Translated: "Received image: explosion smoke on Mount Derak #Shiraz, Tuesday, 30 Tir, around 00:40 AM #Iran"