Forensic examinations are continuing today after a safety deposit company in Hatton Garden was raided over the bank holiday weekend.
Police predict the investigation could take up to two days.
It is believed between 60 and 70 safety deposit boxes were raided at the Hatton Garden Safety Deposit Ltd.
It's estimated that thieves could have got away with around £200 million worth of jewellery. Raya El Salahi reports.