The new U.S. ambassador to Saudi Arabia, retired general John Abizaid, arrived in Riyadh on Thursday, an embassy statement said, filling a position vacant since President Donald Trump took office more than two years ago.

The Bahraini Foreign Ministry said it was following up on the traffic incident that killed six Bahrainis in the Saudi capital, Riyadh.

Riyadh police spokesman said that a shooting incident took place on Saturday night near royal palaces in the Saudi capital.

The luxury Riyadh hotel used as a prison during Saudi Arabia's crackdown on corruption will reopen for business next month, according to a company employee and its website, suggesting authorities are close to settling the cases of many suspects.

A gunman killed two staff at a private school owned by a prominent Saudi billionaire in Riyadh on Wednesday, a security source told AFP.