Iran’s IRGC had earlier said they targeted radar systems in locations including Al-Kharj, home to Prince Sultan base.

At least two people have been killed after a projectile fell on a residential location in Saudi Arabia‘s Al-Kharj city, Saudi authorities reported, as Iranian counterattacks on Gulf nations hosting US military assets entered a second week.

The Saudi civil defence said in a post on X on Sunday, without mentioning Iran, that an unspecified “military projectile” had hit a residential area in Al-Kharj, killing two foreign nationals – one Indian and one Bangladeshi – and injuring 12 people.

Iran’s Islamic Revolutionary Guard Corps (IRGC) had said earlier that it had targeted radar systems in locations including Al-Kharj governorate, which is home to the Prince Sultan airbase used by United States forces, and has come under repeated attack over the past week in the US and Israeli war against Iran.

Reporting from Doha, Al Jazeera’s Laura Khan said the projectile had landed on a residential site belonging to a maintenance and cleaning company.

“This is getting very volatile and dangerous for people across the Gulf,” she said. “It’s really important to emphasise that over 200 nationalities live and work across the Gulf nations. Many of these could be labourers.”

On Sunday, the Saudi Defence Ministry reported intercepting 15 drones, including an attempted attack in the diplomatic quarter of the capital Riyadh.

Kuwait, meanwhile, said an attack hit fuel tanks at its international airport, and Bahrain reported a water desalination plant had been damaged.

Sunday’s attacks came after Israeli warplanes hit five oil facilities around the Iranian capital, killing several people, according to a state oil executive, and blanketing the city in acrid smoke.

A spokesperson for the IRGC said Iran would retaliate if US-Israel attacks on its energy infrastructure did not let up.

“If you can tolerate oil at more than $200 per barrel, continue this game,” said the spokesperson.

As the war extended into its ninth day, the IRGC said it had enough supplies to continue drone and missile attacks across the Middle East for up to six months.

Ahmed Aboul Gheit, secretary-general of the Arab League, said Iran’s attacks on several member states were “reckless”, urging Tehran to reverse what he called a “massive strategic mistake”.

Iran’s Health Ministry said Sunday that at least 1,200 civilians had been killed and around 10,000 wounded since the US and Israel launched their war on Iran on February 28.