Kim Kardashian West's bodyguard vows to track down the men who robbed her at gunpoint

He told MailOnline: "The event that occurred in Paris was one of the most sickening things I have seen or heard.

"We have tips and leads and we will find you. That I promise you... you messed with the wrong one."

Police sources have revealed Kim was tailed by two men in the days before the robbery, with the suspects - described as Caucasian and North African and having French accents - posing as a plain-clothes detective and a photographer to gain 'close surveillance' information ahead of the terrifying incident.

And one had even tried to gain access to the 'Keeping Up With the Kardashians' star's apartment within the exclusive Hotel Pourtales.

A source said: "Kim Kardashian was tailed for at least three days before the robbery.

"We know there was one man who pretended to be a photographer who followed the American celebrity on a motorbike to find out her whereabouts. Another man pretended to be a plain-clothed detective to try to get a seat next to her at the exclusive Ferdi restaurant on Thursday night.

"But both men were fakes. The photographer tried to listen in to the conversations by other snappers but he was challenged by the genuine ones.

"And the so-called policeman fled when staff at Ferdi asked to see his credentials."

Officers suspect the raid was carried out by a "sophisticated international criminal organisation".

The source added: "We know the licence plate of one of the vehicles used, a Fiat 500, and a photograph of one of the suspects. They both appear to be French and highly professional.

"But this kind of robbery could only have been carried out by a sophisticated international criminal organisation.

"It would have to be if they had any hope of re-classify the stolen jewels and sell them again."