Turkish police prepare to search the Saudi Arabian Consul General's residence in Istanbul, Turkey, on Oct. 17, 2018. A Turkish team on Wednesday entered the residence of the Saudi consul general in Istanbul to seek further evidence over the disappearance of the Saudi journalist Jamal Khashoggi. (Photo: Xinhua)

The Istanbul Chief Public Prosecutor's Office said on Thursday that the ongoing investigation into the disappearance of Saudi journalist Jamal Khashoggi complies with international laws and conventions in all aspects.

Chief prosecutor Irfan Fidan said in a written statement that the public would be informed about the investigation "when necessary."

According to press reports, Turkish police officers have expanded their search for more evidence about the whereabouts of Khashoggi to a forest in Istanbul and a farmhouse in the neighboring province of Yalova.

Police and crime scene investigators have conducted searches inside Saudi Arabia's consulate building in Istanbul, the residence of the Saudi consul general, and on vehicles belonging to the consulate.

Local media claimed that the investigators had found "certain evidence" that the journalist, who has not been seen since he entered the Saudi consulate on Oct. 2, was murdered in the consulate.