A Turkish source confirmed that investigators found samples of the house of the Saudi consul in Istanbul that corresponded to samples of the consulate building after finding evidence that Saudi journalist Jamal Khashoggi was killed in the consulate, while Turkish investigators continue to search the house.

"The samples we found at the Saudi consul's house are identical to the samples in the consulate building," a source in the Turkish prosecutor's office told the island on Wednesday evening.

Investigators asked for samples of Khashoggi from the United States where he was staying, the source said.

Meanwhile, the Saudi consul Mohammed al-Otaibi continues to work in the joint investigation team of the joint working group formed on the disappearance of Khashoggi, who entered the Turkish team about two hours after the entry of the Saudi team.

Turkish police have brought police dogs to participate in the search, and the Turkish investigation team used a drone to take pictures of the house and its surroundings from the air.

Al-Jazeera correspondent in front of the house said that the Turkish investigation team thoroughly examined the garden of the house, swimming pool, roof and upper rooms, adding that investigators are using all criminal means to verify the possibility of traces of the death or burial of Khashoggi's body.

A source in the Istanbul prosecutor's office confirmed that the inspection would include all the rooms and the interior of the house, and that finding Khashoggi's body or knowing how to get rid of them was an urgent question to ask for inspection of the consulate cars believed to have been used.

Two days ago, the Turkish and Saudi investigation teams conducted a nine-hour inspection of the Saudi consulate building. A source at the prosecutor's office said the preliminary elements of the investigation confirmed Khashoggi's death inside the consulate despite attempts to blur it.

Earlier on Wednesday, Turkish Foreign Minister Mouloud Gawishoglu expressed his regret over the delay in the inspection of the Consul's home. The Saudi side was on the pretext that the Consul's family - which had suddenly left for Riyadh - was still at home.