Turkish authorities searched this villa and another in Turkey’s Yalova province Monday for evidence related to the killing and dismemberment of Saudi journalist Jamal Khashoggi. (Erdem Sahin/EPA-EFE/Shutterstock)

A Saudi agent involved in the killing of journalist Jamal Khashoggi had discussed concealing Khashoggi’s dismembered remains during a telephone call the day before the killing, Turkish prosecutors said Monday.  

During a telephone discussion on Oct. 1 between the agent, Mansour Othman M. Abbahussain, and a Saudi businessman who owns a villa in Turkey, “the conversation was regarding what would be done to destroy/hide the body of the killed journalist” after it was dismembered, a prosecutor’s statement said. 

Khashoggi, a Washington Post contributor who had written columns critical of current Saudi leaders, was killed inside the Saudi Consulate in Istanbul on Oct. 2 by members of a 15-man team that had been sent to Turkey from Saudi Arabia, according to Turkish and Saudi prosecutors. His remains have not been recovered.  

The phone discussion, if confirmed, bolsters Turkey’s repeated assertions that Khashoggi’s killing had been planned. Saudi prosecutors say that the agents had orders only to persuade or force Khashoggi to return to Saudi Arabia and that they killed the journalist during a struggle in the consulate.  

Information about the phone call led Turkish investigators to search two villas in northwestern Turkey early Monday, including one owned by the Saudi businessman who is said to have spoken with the agent, according to Turkey’s state-run Anadolu news agency.  

The businessman was not in Turkey when Khashoggi was killed and has not visited the country since, the news agency said. In addition to the search of the villas, security agents, using sniffer dogs and drones, drained a well in the yard of one of the houses. It was not clear whether the search, in Yalova province, turned up any evidence.  

Turkey’s steady release of investigative details has kept Saudi Arabia’s leaders on the defensive and forced a belated Saudi admission that its agents were responsible for Khashoggi’s killing. The investigation has focused attention on the policies of Crown Prince Mohammed bin Salman, Saudi Arabia’s de facto ruler, who has imprisoned rivals, clerics and independent political activists at home.   

To counter the negative publicity, Mohammed embarked on a tour of Arab states last week, visiting closely allied leaders in Bahrain, Egypt and the United Arab Emirates. He was scheduled to visit Tunisia on Tuesday.

Activists and journalists who protested Mohammed’s visit in the Tunisian capital Monday displayed a banner of the crown prince holding a chain saw — a reference to Khashoggi’s dismemberment, Bloomberg News reported.  

Zeynep Karatas contributed to this report.