Pictured: Drill Hatton Garden raiders used to break through wall to access deposit boxes as detectives offer £20,000 reward for information leading to their arrest

This is the drill that was used by thieves during the £60million Hatton Garden heist over the Easter weekend.

The gang used the power tool to cut through the wall of the secured vault where they raided 72 security boxes before escaping with wheelie bins full of precious gems.

The photograph of the Hilti DD350 drill was released tonight by Scotland Yard as the officer in charge of the investigation said the crime had been carried out by an 'Ocean's 11 type team'.

Police are offering a £20,000 reward for information leading to the arrest and conviction of those involved in the raid. 

The six men were captured on CCTV as they carried out the bold raid in London's diamond district.

They used the drill to cut through a concrete wall into the bank's strongroom, where they ransacked security vaults.

But, amazingly, the hole used by the gang was just 45cm wide and 25cm high - meaning they would have had something of a squeeze to muscle their way into the basement.

Images of the scene show the mayhem that detectives discovered when they arrived at the crime scene in London's diamond district. 

Safety deposit boxes were strewn across the floor while power tools - including the heavy duty Hilti DD350 used to access the vaults - were discarded nearby.

Scotland Yard also described how there was rubbish covering the Hatton Garden basement, while the wrought-iron cage door had been broken down. An angle grinder, concrete drills and crowbars were found amid the security boxes. 

Officers said there was no sign of forced entry to the outside of the building, indicating that they had a key or that someone had let them in from the inside.

One of the theories behind the heist is that a member of the gang had rented a space within the