"This was such a horrible crime, that even the slightest trace of hypocrisy would bring shame on us. It is not my role to state who wants to protect whose interests here. But I know one thing: the only European interest is to reveal all the details of this case, regardless of who is behind it," Tusk told the European Council members, as quoted in the European Council's press release.
Khashoggi, a Washington Post columnist known for his criticism of Saudi policies, was last seen entering the Saudi Consulate in Istanbul on October 2.
Following more than two weeks of denials, Saudi Arabia admitted on Friday that the journalist had been killed in a brawl inside the consulate. According to Riyadh, 18 people have been arrested over their involvement in the incident.