Videos and images surfaced on social media showed thick black smoke billowing into the sky, triggering panic among residents.

Iran and the United States leaned into gunboat diplomacy Thursday, with Tehran holding drills with Russia and the Americans bringing another aircraft carrier closer to the Mideast.

The talks come as the U.S. ramps up its military presence in the Middle East and Iran holds large-scale maritime exercises.

US Iran tensions highlights: Parand fire department told state media that the black smoke was due to a fire in the reeds around the Parand river bank.

Iran has been joined by Russia and China in deploying naval vessels for a joint live-fire exercise in the Strait

Russia warns that military action could spark a wider regional crisis and undermine fragile diplomatic gains, while confirming ongoing talks with Syria’s new leadership to preserve its key military presence.