US President Donald Trump said the US is asking Turkey for audio and video relating to missing Saudi journalist Jamal Khashoggi "if it exists."

President Donald Trump speaks during an interview in the Oval Office of the White House, Tuesday, Oct. 16, 2018. (Photo: VCG)

The president on Wednesday called Saudi Arabia an important ally, noting it is an important customer for US military exports.

Turkish officials have said Khashoggi was murdered in the Saudis' Istanbul consulate, which Saudi officials have denied.

US officials say they are taking Khashoggi's disappearance seriously, but Trump says he has not sent the FBI, stressing that he was not "American citizen."

In an interview with The Associated Press on Tuesday, Trump warned against a rush to judgment, comparing condemnation of Saudi Arabia to the allegations of sexual misconduct against Supreme Court Justice Brett Kavanaugh.