WASHINGTON - Saudi Foreign Minister Adel Al-Jubeir said on Sunday that Custodian of the two Holy Mosques King Salman is determined to hold to account those responsible in the case regarding the late journalist Jamal Khashoggi.

Al-Jubeir told FOX News on Sunday the killing of journalist Jamal Khashoggi inside the Saudi consulate in Istanbul was a "huge and grave mistake" and promised his family that those responsible will be punished.

"This is a terrible mistake. This is a terrible tragedy. Our condolences go out to them. We feel their pain," Jubeir said in an interview with Fox News.

"Unfortunately, a huge and grave mistake was made and I assure them that those responsible will be held accountable for this."

"The Crown Prince Muhammad Bin Salman was not aware of this, even the senior leadership of the intelligent service was not aware of this", Al-Jubeir said.

He added that conflicting reports about whether Khashoggi had left the Saudi consulate in Istanbul prompted a probe into his disappearance, and that Saudi Arabia will continue to put out information on the case "as it becomes available."

He told the news program that Saudi-US ties would "weather" the Khashoggi case.

"The individuals who did this, did it outside the scope of their authority, and what compounded the mistake was the attempt to try to cover up," Jubeir told Fox News.

"That is unacceptable in any government. These things unfortunately happen. We want to make sure that those who are responsible are punished and we want to make sure we have procedures in place to prevent it from happening again."

"We are determined to uncover every stone. We are determined to find out all the facts. We are determined to punish all those responsible for this murder.

"We are determined to uncover all of the facts in the case of Jamal Khashoggi to know what happened and to make sure that all those responsible be held to account"

"For the past 80+ years, since the founding of the modern Saudi State, we have never engaged in such behavior and we will never engage in such behavior."

"We don't know, in terms of details, how. We don't know where the body is," Jubeir said, adding that the Saudi public prosecutor had put out orders to detain 18 individuals, "the first step in a long journey."