Saudi Arabia sent a two-man "cleanup team" to erase evidence of journalist Jamal Khashoggi's killing a week after he disappeared at the Saudi Consulate in Istanbul, a Turkish official said Monday, calling it a sign that top Saudi officials knew of the crime.

Confirming a report in Turkey's pro-government Sabah newspaper, the official said the chemist and toxicologist were tasked with erasing evidence before Turkish investigators were given access to the consulate and consul's residence.

Sabah identified the two men as Ahmed Abdulaziz al-Jonabi and Khaled Yahya al-Zahrani, saying they arrived in Turkey as part of an 11-person team sent to carry out the inspections with Turkish officials.