The move comes weeks after Iranian authorities issued indictments against dissident media groups, alleging they had encouraged the nationwide protests in January.
During the strikes overnight on Saturday into the early hours of Sunday, explosions were heard in Bandar Abbas and Qeshm Island, Iranian state-affiliated media reported.
The sirens follow the eighth night of US-Iran strikes over the weekend, triggered by the death of two US service members in Iran's strike on a US military base in Jordan on Friday.
Iran’s attacks on the Kurdistan Region come as the Iraqi prime minister has wrapped up his visit to the US.
IDF unit shares process of dismantling Hezbollah's 'crazy, Iranian' terror tunnels • Report: US warplanes strike in southern Iran • IRGC claims two vessels in Hormuz had 'accident' amid US strikes
According to the International Maritime Organization, at least 17 sailors have been killed since the beginning of the war, with three killed and over a dozen wounded in the last week alone.
Later, Iranian state television cited the Iranian Army as saying that it had targeted two US military bases in Kuwait.
Khamenei threatened that "the noble Iranian nation and the Axis of Resistance have unforgettable lessons in store" for the US Army.
Iran is likely trying to send a message to Syria. Iran wants weapons to continue to flow to Hezbollah via Syria.
Sirens, missile interceptions, and reported damage followed as Iran claimed attacks on US bases in Kuwait, Jordan, and Bahrain.
IDF strikes Hezbollah drone • Khamenei reportedly warns of additional full-scale retaliation if US strikes continue • Iran attacks US bases in Saudi Arabia
