TEHRAN - Iran on Wednesday said it had struck several US bases in the region in retaliation for the latest wave of US attacks on Iran, further straining the ceasefire after Iran and Israel traded missile attacks in a recent major escalation.

Iran's Islamic Revolution Guard Corps (IRGC) said Wednesday that it launched a drone attack on the US Fifth Fleet in Bahrain in response to the US attacks on southern Iran.

The IRGC said it also targeted Ali Al Salem Air Base in Kuwait with drones, as well as four sites at the US al-Azraq base in Jordan using long-range missiles, Iranian media reported.

"In the event of continued hostility, heavier responses are on the way," the IRGC said in a statement.

The US strikes began at 5 pm ET (2100 GMT) Tuesday, according to the US Central Command, which oversees US military operations in the Middle East.