A helicopter belonging to Saudi oil giant Aramco ​crashed on Sunday in Ras ‌Tanura on Saudi Arabia’s eastern coast west of the Strait of Hormuz, ​killing 14 nationals, the ​state news agency reported, adding that ⁠the cause was unknown.

Aramco ​had resumed crude oil loadings on ​Friday at its Ras Tanura terminal in the Gulf after they were halted ​for nearly four months.

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“Investigations ​are underway, with the participation of ‌relevant ⁠authorities, to determine the causes of the helicopter crash,” the state news agency added.

Saudi Arabia, the ​world’s biggest ​oil ⁠exporter, has joined a rush to move cargoes ​after Middle East producers ​ramped ⁠up oil and gas output and exports ahead of an interim ⁠deal ​to halt the ​war between the United States and Iran.