The luxury five star Dorchester Hotel has been plundered by smash and grab robbers - exactly one month after a similar raid.
The six-strong gang of men pulled up outside the hotel in Mayfair, central London, on mopeds in the early hours of this morning, before three of them smashed their way through the front door and broke into display cabinets.
It is the second attack in just four weeks, following the theft of watches and jewellery on 10 June in what police described as a “well-planned” heist.
In today's robbery the thieves all fled the scene within minutes and no one has yet been arrested.
Detective Sergeant Mark Staples said: “We continue work towards establishing those responsible for carrying out not only the robbery which took place in the early hours of this morning but the robbery which took place last month.
"We have yet to make arrests in relation to either incident and we urgently require the support of the public with providing us with any information no matter how small. There may be people who know who is responsible and I am keen for those with any information to come forward and assist us with our investigation."
An eyewitness told the London Evening Standard: "They were on yellow R1 motorcycles; they are really fast and there's no way police were going to catch them on those.
“They were dressed in dark clothes and wore balaclavas. They smashed through the doors on the bikes and then came out with jewellery. They were in and out fast. It looked like a very professional job.”
A spokeswoman for the Dorchester said: “We can confirm there was an incident at the hotel early this morning and we are assisting the authorities with their inquiries. The hotel security team were quick to respond and no-one was hurt. The comfort and security of our guests and staff is our top priority.”
Additional reporting by Press Association