By Fatih Hafiz Mehmet</p> <p>ANKARA (AA) – The last fall killing of Saudi journalist Jamal Khashoggi in kingdom's Istanbul Consulate was "planned and perpetrated by Saudi officials", UN special rapporteur said on Thursday.</p> <p>Agnes Callamard, the UN special rapporteur on extrajudicial, summary or arbitrary executions, recently visited Turkey with a team of experts in an international inquiry into killing of Saudi journalist Jamal Khashoggi.</p> <p>"Evidence collected during my mission to Turkey shows prime facie case that Mr. Khashoggi was the victim of a brutal and premeditated killing, planned and perpetrated by officials of the State of Saudi Arabia,” Callamard was quoted as saying in a statement.</p> <p>Callamard added: "Turkey’s efforts to apply prompt; effective and thorough; independent and impartial; and transparent investigations — in line with international law — had been seriously curtailed and undermined by Saudi Arabia."</p> <p>According to the statement, the killing of Khashoggi violated "both international law and core rules of international relations, including the requirements for lawful use of diplomatic missions".</p> <p>Callamard also thanked Turkey for its support during her visit to the country over international inquiry into crime.</p> <p>Khashoggi, a contributor to The Washington Post, was killed at the Saudi Consulate in Istanbul on Oct. 2.</p> <p>After producing various contradictory explanations, Riyadh acknowledged he was killed inside the consulate building, blaming the act on a botched rendition operation. </p> <p>Turkey has sought the extradition of the Saudi citizens involved in the killing as well as a fuller accounting of the killing from Riyadh.