Yemen's Houthi rebels say the U.S. military has launched a series of airstrikes on the capital, Sanaa, and a rebel-held coastal city.

U.S. strikes on Yemen's Ras Isa fuel terminal on the Red Sea coast have killed at least 74 people in the deadliest attack since the U.S. started its bombing campaign against the Houthis last year, according to the Houthi-run health ministry.

U.S. forces on Thursday hit a major fuel port in western Yemen used to supply Houthi rebels, the first such airstrike publicly announced since Washington began an air campaign against the militant