Britain's Ministry of Defense says its jets struck at oil facilities in Syria, hours after Parliament voted for Britain to join allies in bombarding the Islamic State group.

The ministry said in a Twitter message that Royal Air Force jets hit the Omar oil fields. There was no immediate assessment offered of the results of the strikes.

British warplanes have carried out airstrikes in Syria, hours after Parliament voted to authorize air attacks against Islamic State group targets there.

Earlier, a Ministry of Defense spokesman told the AP that four Royal Air Force Tornados operating from a British air base in Akrotiri, Cyprus, participated in the attack. He spoke on condition of anonymity because he was not authorized to give his name when discussing operations.