BEIRUT, Lebanon — Yemen’s Houthi rebels carried out multiple drone attacks on Saudi oil facilities on Tuesday, a day after Saudi Arabia said two of its oil tankers had been damaged in an act of sabotage, ratcheting up tensions in the region.

A Houthi spokesman, Mohammed Abdul Salam, claimed responsibility for the drone strikes on Twitter, saying that they were a response to Saudi “aggression” and “genocide” in Yemen.

Although the Houthis are backed by Iran, it was unclear whether the attacks were related to increasing tensions between Iran and the United States and its allies in the Persian Gulf.

A total of four oil tankers were damaged off the coast of the United Arab Emirates on Sunday in what the Emirati government called acts of sabotage. Though little hard information has emerged about the attacks, American and Gulf suspicions have centered on Iran, in an area already jittery about the prospect of a violent clash with the republic.