A man holds a picture of Saudi journalist Jamal Khashoggi as media members film during a protest outside the Saudi Consulate in Istanbul, Turkey October 8, 2018. REUTERS/Murad Sezer

WASHINGTON (Reuters) - U.S. President Donald Trump said on Monday he was concerned about reports of Saudi Arabian journalist Jamal Khashoggi, who has been missing since last week and Turkish sources have said that authorities believe he was killed inside the Saudi consulate in Istanbul.

“I am concerned about it. I don’t like hearing about it,” Trump told reporters at the White House. “Hopefully that will sort itself out. Right now nobody knows anything about it.”