Hawzah News Agency (Istanbul, Turkey) - "We believe that the two individuals came to Turkey for the sole purpose of covering up evidence of Jamal Khashoggi's murder before the Turkish police were allowed to search the premises," the official said on condition of anonymity.

A newspaper close to Turkey's government also Monday claimed that a team from Saudi Arabia sent to help Turkish authorities investigate Khashoggi's death worked instead to remove evidence of the slaying.

Sabah newspaper, citing "trusted sources," said that an 11-member team of Saudi investigators that arrived in Turkey nine days after Khashoggi was killed included a chemical expert and a toxicology expert.

Also Monday, reports that Khashoggi's was dissolved in acid need to be investigated, Turkey's Vice President Fuat Oktay said Monday.

He told Turkey's Anadolu news agency it was now accepted that Khashoggi, who disappeared in Saudi Arabia's Istanbul consulate on Oct. 2, was targeted in a pre-meditated murder. "The question now is who gave the orders. This is what we are seeking answers to now," Oktay said. "Another question is where the body is ... There are reports of [the body] being dissolved with acid now. All of these need to be looked at."

On Saturday, Sabah said Khashoggi's body – which still hasn't been found – was dismembered and removed from the Saudi consulate in five suitcases.

Meanwhile, Khashoggi's sons appealed for his remains to be returned so that he may be buried in Saudi Arabia.

In an interview with CNN Sunday, the sons also said they hoped he did not suffer when he was killed.