Istanbul (CNN) A member of the 15-man team suspected in the death of Jamal Khashoggi dressed up in his clothes and was captured on surveillance cameras around Istanbul on the day the journalist was killed, a senior Turkish official has told CNN.

CNN has obtained exclusive law enforcement surveillance footage, part of the Turkish government's investigation, that appears to show the man leaving the Saudi consulate by the back door, wearing Khashoggi's clothes, a fake beard, and glasses.

The same man was seen in Khashoggi's clothing, according to the Turkish case, at the city's world-famous Blue Mosque just hours after the journalist was last seen alive entering the consulate on October 2.

The man in the video, identified by the official as Mustafa al-Madani, was allegedly part of what investigators have said was a hit squad, sent to kill the journalist during a scheduled appointment to get papers for his upcoming wedding.

Madani at the Blue Mosque in Istanbul captured on law enforcement surveillance footage, according to a Turkish official.

Saudi Arabia has presented a shifting narrative of what happened to Khashoggi. After weeks of denying involvement in Khashoggi's disappearance, Saudi Arabia said that he was killed in the Istanbul consulate, saying his death was the result of a "fistfight." A Saudi source close to the royal palace later told CNN that the Washington Post journalist died in a chokehold. On Sunday, its foreign minister, Adel al-Jubeir, went further, describing Khashoggi's death on Fox News as a "murder" and a "tremendous mistake." He also said they "don't know where the body is."

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