Sri Lanka, May 26 -- Iran says the US has committed a "gross violation" of the ceasefire with new air strikes it launched on the country in the past 48 hours.

The US Central Command (Centcom) said Iranian missile sites and boats attempting to place mines had been targeted with what it called "self-defence strikes" in southern Iran on Monday.

Iran's foreign ministry said it held the US responsible for the consequences of its "aggressive and unjustified actions" in the Hormozgan region, which has a coast along the Strait of Hormuz - the crucial waterway Iran has blocked causing a spike in world energy prices.

It is unclear what impact the strikes will have on talks aimed to end the conflict.

"Without a doubt, the Islamic Republic of Ira...