US President Donald Trump said Iran was “probably” behind the attack on a vital oil pipeline in Saudi Arabia which led to the pipeline’s closure.

The East-West Pipeline was attacked by several drones coming from Iraq on Thursday, the Saudi foreign ministry said Friday, resulting in injuries and some damage. The energy ministry that the pipeline had been attacked and was shut down as a precautionary measure.

Trump pointed the finger at Iran as most likely being behind the attack when asked about the incident by a reporter during a visit to Ireland on Saturday.

“I think they are, probably they are,” Trump told journalists in Dublin.

He added that he had held a call with Saudi Crown ​Prince Mohammed bin Salman, whom he referred to ​as ‌a “good friend.”