A £20,000 reward is on offer if you can help police catch the Hatton Garden jewellery thieves.
In arguably one of the most audacious crimes ever seen in London, a gang raided the vault of a safe deposit company over the Easter weekend.
Police say there was no sign of forced entry to the outside of the building, which houses a number of businesses, with the thieves disabling a communal lift on the second floor before using the lift shaft to climb down into the basement.
They forced open shutter doors into the basement and bored holes into the vault wall.
They then opened 72 safe deposit boxes, with reports that the contents may have been worth as much as £60 million.
The gang initially entered the building after 9pm on April 2 and left shortly after 8am on Good Friday.
They returned soon after 10pm on April 4 and were recorded on CCTV leaving around 6.40am on Easter Sunday.
On both days one man made his way to the side exit of Hatton Garden Safety Deposit Ltd where he let the other gang members into the building.
Police have now announced a reward of £20,000 for any information leading to the arrest and conviction of all those responsible for the heist.
Detectives have also released 14 CCTV images showing six men entering and leaving the building.
Detective Superintendent Craig Turner, head of the Flying Squad, said: “We have also released an image of the Hilti DD350 drill that was used in the burglary and we are keen to hear from wives or partners of anyone who has specialist knowledge or skills that use this sort of equipment. Were they away during the Easter Bank Holiday weekend or have they been acting oddly since the burglary was carried out?”
Appearing on the BBC Crimewatch show, Mr Turner said: "This was a particularly ambitious burglary to say the least and has affected so many victims.
"People's property has been taken, people's pensions, people's heirlooms which obviously can't be replaced by insurance firms.
"We may well be misled - this is carried out by an almost Ocean's 11 type team, but in essence there are victims behind this and these are callous thieves."
Anyone with information can contact the incident room on 020 8785 8655 or email opspire@met.police.uk.
Anyone with information who wants to remain anonymous should call Crimestoppers on 0800 555 111.
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