Iranian drone attacks hit various targets in Kuwait on Sunday, with state energy company Kuwait Petroleum Corporation reporting fires and “severe material damage” at some operating units.

KPC said in a statement that teams were working to contain the fires at affiliates Petrochemical Industries Company and National Petroleum Company.

In a separate incident, KPC earlier said a fire broke out in its Shuwaikh oil sector complex, which houses the oil ministry and KPC headquarters, after a drone attack.

Kuwaiti state media, citing the finance ministry, said an Iranian drone hit an office complex for government ministries, causing significant material damage but no casualties.

Two power generation units were also taken out of service after Iranian drones targeted two power and water desalination plants, causing significant damage, Kuwait’s electricity and water ministry said.

No injuries were reported in any of the incidents.

The US-Israeli war on Iran is in its sixth week, with Tehran striking Israel and Gulf Arab states hosting U.S. military installations.

Iran’s Revolutionary Guards claimed responsibility for attacks on petrochemical plants in Kuwait, as well as the United Arab Emirates and Bahrain.