US Defense Secretary James Mattis was targeted in a rocket attack that left at least five civilians wounded at an Afghan airport Wednesday hours after he arrived to pledge support for the government.

The rockets landed in an open area after being fired at Kabul’s Hamid Karzai International Airport, Interior Ministry spokesman Najib Danish told CNN.

The Taliban claimed responsibility for the attack, which was meant to target Mattis’ plane, Taliban spokesman Zabiullah Mujahid tweeted.