Iran's maritime authority said maritime trade between Qatar's Ruwais port and Iranian ports has resumed.

Independent research platform HFI Research said over the past 24 hours many vessels that had planned to transit via the Omani route instead chose the Iranian-side route.

Iran's Intelligence Ministry said on the 4th that security forces, working with the IRGC and national police, dismantled four cells it says were linked to US and Israeli intelligence agencies in Sistan‑Baluchestan province, including Zahedan. Five principal members were arrested and two armed suspects killed. Authorities also said they uncovered and dismantled an additional five‑person cell suspected of plotting attacks on military units and judicial institutions; those suspects were detained. Security forces seized firearms, multiple hand grenades, four radio units, a Starlink satellite communications kit and large quantities of ammunition. Iran said the suspects received military and explosives training abroad and had planned sabotage, assassinations and terrorist attacks but were arrested before acting and the network has been dismantled.