Iran’s Revolutionary Guards say they have targeted a United States early-warning radar system in Bahrain, in what would be the first reported attack on American military assets in a Gulf country since early September.

Iranian state media reports that the strike was carried out in retaliation for an alleged air attack on a telecommunications tower in the country’s southern Sirik County.

The claim comes amid a fragile lull in the conflict between Iran and the United States, which has spread across the Middle East.

However, Washington and Bahrain have yet to comment on the reported attack.