In this Jan. 29, 2011 file photo, Saudi journalist Jamal Khashoggi speaks on his cellphone at the World Economic Forum in Davos, Switzerland. (AP)

ISTANBUL, Oct. 31 (Xinhua) -- The Istanbul Chief Public Prosecutor's Office said on Wednesday that the body of Saudi journalist Jamal Khashoggi was dismembered after he was strangled to death inside the Saudi Arabian consulate in the city.

"In accordance with plans made in advance, Jamal Khashoggi was choked to death immediately after entering the Consulate General of Saudi Arabia in Istanbul on Oct. 2, 2018, for marriage formalities," the office said in a written statement.

"The victim's body was dismembered and destroyed following his death by suffocation, in line with advance plans," added the statement.

The prosecutor's office also noted that no concrete results had come out of the meetings with Saudi Arabia's top prosecutor Sheikh Saud al-Mojeb in Istanbul, "despite the good intentions to uncover the truth behind Khashoggi's killing."

During the meetings, the Turkish side asked where Khashoggi's body was, whether the Saudi investigation had discovered anything regarding the planning stage of the killing and the identity of the reported "local cooperator."

According to the statement, the Istanbul chief prosecutor reiterated a call for the extradition of the suspects arrested in Saudi Arabia, saying "Turkish courts have jurisdiction over the case in line with Turkish law and principles of international law, provided that Jamal Khashoggi was killed in Turkey."

Al-Mojeb reportedly left Turkey on Wednesday after meeting with his Turkish colleagues and inspecting the Saudi consulate, where Khashoggi was last seen on Oct. 2.

Riyadh has acknowledged Khashoggi as a victim to a premeditated killing inside the Saudi mission in Istanbul.

The Saudi side has reportedly invited the Istanbul chief prosecutor to Saudi Arabia along with the evidence collected during the investigation.