An Aramco helicopter crashed on Sunday in Ras Tanura on Saudi Arabia's eastern coast, killing all 14 people on board.
The crash occurred at 6am local time. The cause is currently unknown.
"The relevant authorities have launched a full investigation to determine the cause of the crash," the state news agency reported.
Aramco, the world's biggest oil exporter, had recently resumed crude oil loadings at its Ras Tanura terminal in the Gulf after a four-month halt.