Explosions were heard in Iran's Qeshm Island on Tuesday afternoon, the semi-official Iranian Mehr News Agency said, adding the cause was unknown, and no official entity has commented yet.
The island is located between the Persian Gulf and the Strait of Hormuz.
On Monday night, drones were spotted in the skies over Qeshm Island, Islamic Revolutionary Guard Corps-affiliated Tasnim News Agency reported at the time.
This led to air defenses being activated, according to the outlet.
Pro-regime activists shout 'Death to Israel, UAE,' IRGC-linked media reports
The IRGC-affiliated outlet, along with other pro-regime media, also shared footage appearing to show pro-regime protesters flying Iranian flags and chanting "Death to Israel," and "Death to the United Arab Emirates."
Additionally, local media reported that Qeshm Island's air defense systems were also activated on Tuesday morning.
Trump planned resuming airstrikes on Tuesday before Gulf leaders requested he postpone, president says on Truth Social
The reported explosion follows a Monday Truth Social post in which US President Donald Trump mentioned that leaders of Gulf states had requested that he hold off on striking Iran.
Trump was originally planning to carry out the strikes on Tuesday, he wrote.
The leaders mentioned in the post were Qatari Emir Tamim bin Hamad Al Thani, Saudi Crown Prince Mohammed bin Salman Al Saud, and UAE President Sheikh Mohamed bin Zayed Al Nahyan.
"Based on my respect for the above-mentioned leaders, I have instructed Secretary of War, Pete Hegseth, the Chairman of the Joint Chiefs of Staff, General Daniel Caine, and the United States Military that we will NOT be doing the scheduled attack of Iran tomorrow," Trump said.