U.S. officials last week called for American citizens to leave Iraq hours after a drone strike killed Iranian Quds Force leader Qassem Soleimani and Iraqi militia commander Abu Mahdi al-Muhandis.

Chevron said a small contingent of expatriate employees and contractors temporarily left its Kurdistan region operations as a precautionary measure. Other U.S. and foreign oil and service companies have withdrawn dozens of workers since the weekend.

The U.S. major has a small operation in Iraq that is expected to begin producing 20,000 barrels of oil per day by mid-year. Operations are continuing with local staff and expatriates working remotely, the Chevron spokeswoman said.

(Reporting by Gary McWilliams; Editing by Steve Orlofsky)