Saudi Arabias mass purge of elites accused of graft "raises a few concerns", US Secretary of State Rex Tillerson said Friday, adding Washington was closely monitoring the Gulf countrys unprecedented probe into alleged embezzlement worth $100 billion.
Speaking to reporters before landing in the Vietnamese city of Danang, where Tillerson is accompanying President Donald Trump to the APEC summit, Washington's top diplomat said Saudi Arabia's anti-corruption purge was "well intended".