US President Donald Trump speaks during a joint press conference with Nigeria’s President Muhammadu Buhari in the Rose Garden of the White House on April 30, 2018 in Washington, DC.
Mandel NGAN / AFP

President Donald Trump said Monday he was “concerned” by the disappearance of a Saudi journalist and Washington Post contributor allegedly killed at the Saudi consulate in Istanbul.

“I am concerned. I don’t like hearing about it. Hopefully, that will sort itself out,” Trump told reporters at the White House.

“Right now, nobody knows anything about it. There are some pretty bad stories going around. I do not like it.”

Jamal Khashoggi, who is an opinion page contributor at the Post, disappeared after visiting the kingdom’s consulate. A Turkish government source said he was killed inside, but Saudi Arabia says that the journalist left the building.

Turkish President Recep Tayyip Erdogan on Monday said that Saudi Arabia must “prove it with footage.”