SANAA (Reuters) – An al Qaeda splinter group said it launched a rocket toward the U.S. embassy in Sanaa on Saturday, wounding several guards, to retaliate for a purported U.S. drone strike in a northern province of Yemen the day before.

The U.S. State Department said it had no indication that the embassy was the target of the attack and that none of its staff were wounded.

The rocket landed 200 meters from the heavily fortified embassy, hitting members of the Yemeni special police force who guard the site. At least two were wounded, police said.

The attacker fired the rocket from a car using a M72 light anti-tank weapon before speeding away, a police source told Reuters.