DUBAI: Several ​explosions were heard in southern ‌parts ‌of ​Iran ‌including ⁠Bushehr, ​where one ⁠of Iran’s nuclear plants ⁠is ‌located, ‌as well as Konarak ​and ‌Choghadak, ‌Iran’s Mehr news agency ‌reported on Thursday. 

Iran's state news agency IRNA, citing a local official in Bushehr, reported that a military site on the outskirts of the southern Iranian city was struck by a US-Israeli projectile.

State media also reported that an Iranian navy site in Konarak was attacked.

An official added that the sound of an explosion heard in Bushehr was caused by Iranian air defense systems responding to the attack.

Sources familiar with the matter told Al Arabiya English that the US military was not striking targets in Iran.

The strikes come after Iran launched attacks on US military infrastructure ​in Gulf states earlier on Thursday following US strikes on Iran's southern coastal and eastern provinces.

The clashes put further strain on a three-week-old ceasefire agreement.

The developments came on the day that Iran buried its slain Supreme Leader Ayatollah Ali Khamenei at a shrine in Mashhad, the culmination of a week of mass funeral processions and rallies.

Khamenei was killed in a US airstrike on the first day of the war on Feb. 28, as part of a US-Israeli barrage against the nation that set off a months-long conflict that has killed thousands and throttled worldwide energy supplies.

Attacks on Qatari and Saudi shipping vessels earlier this week upended the fragile ceasefire, with US President Donald Trump declaring the truce "over."

Iranian officials said the US attacks had killed 14 people and injured 78 across five provinces on July ‌8 and 9, state media reported. The Fars news agency said one US strike had hit a rail bridge ‌used for trade with Russia and China.

Several explosions were heard on Thursday morning in Iran's Bushehr province ​and in Bandar Abbas, a port city on Iran's south coast, the semi-official ‌Mehr news agency reported.

Bushehr is home to a Russian-built nuclear power plant and a local official later told state media that a US projectile had hit the ‌perimeter area of the facility. The perimeter had already been hit several times before an April 8 ceasefire.

Iran's army said it had launched attacks at US Patriot systems in Kuwait, an early-warning site in Qatar and a US Army fuel depot in Bahrain.

Kuwait said its armed forces had engaged with a cruise missile, three ballistic missiles and 10 drones in its airspace, and that one person had been injured from falling shrapnel.

Sirens also sounded in Jordan after missiles launched ‌from Iran were detected, the state news agency reported. Eight were intercepted, with no injuries or damage reported.

The foreign ministers of Turkiye and Oman stressed the need to avoid further military escalation in separate calls with their Iranian counterpart.