A third person has been arrested in connection with a burglary at the Fitzwilliam Museum in Cambridge.
Police arrested the 31-year-old man from London on suspicion of money laundering. He is in custody at Thorpe Wood Police Station in the capital.
18 items of Chinese art, thought to be worth about £10 million, were stolen during the raid last month.
A 28-year-old man and a teenager have already been charged with the thefts.