Turkish investigators searching the Saudi Arabian consulate where journalist Jamal Khashoggi went missing have found fresh coats of paint, President Recep Tayyip Erdogan has said.

Police and prosecutors on Monday inspected the consulate building in Istanbul for over eight hours and on Tuesday widened their search to include the Saudi consul’s residence, a short distance away.

Surveillance footage shows vehicles moving between the consulate and the consul's home after Mr Khashoggi's disappearance.

Turkish officials believe Mr Khashoggi was killed and dismembered inside the consulate nearly two weeks ago. According to reports, the government has an audio recording which they have shared as evidence with Saudi Arabia and the US.

“My hope is that we can reach conclusions that will give us a reasonable opinion as soon as possible, because the investigation is looking into many things such as toxic materials and those materials being removed by painting them over,” Mr Erdogan told reporters in Ankara.