"A piece of stolen jewellery was found close to the block, and was presumably dropped by the gang. It suggests that the criminals may have made mistakes because they were in such a hurry," a source close to the investigation told Mail Online.
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It has also been reported that Kim has hired special forces troops to spearhead her own probe into her Paris raid ordeal.
The reality TV star was tied up at gunpoint in her hotel in Paris last week as thieves dressed in police uniform made off with booty including a £3.2million engagement ring and mobile phones.