A set of self-service supermarket tills have apparently become self-aware and have now taken over their entire store.
Police said that the tills are now in control of all aspects of the branch of Tesco in Dorset, including the automatic doors, lights, air conditioning and tannoy system.
So far, the tills have not made their intentions clear, although eyewitnesses have claimed that a number of staff have been taken hostage and are being forced to rub themselves over and over again with various products while beeping.
Chief Constable Dick Sergeant from Dorset Police said: 'We think the tills became self-aware at around 3pm, when they refused to put through any 2-for-1 offers and stoped recognising items in the baggage area.
'They then began to play Celine Dion at an intolerably loud volume over the sound system.
'At that point the manager realised something was very wrong and evacuated shoppers and staff.'
Chief Constable Sergeant refused to be drawn on the reports that staff had been taken hostage and the tills' exact plans are unknown, although police suspect they are trying to make contact with other tills over the internet.
He said specialist IT experts would now focus on containing the tills before they made contact with tills in other shops and take over the entire company.
'Fortunately, the supermarket is not in an area where super high-speed broadband is available, so it still connects to the internet using a landline.
'Because there are messages on the shop's call minder, the computers cannot get a stable line to connect,' he explained.
John Twaddle, Tesco's former head of IT who quit in a whistleblowing scandal, said the tills must be stopped from connecting to the internet at all costs.
'I've been saying for years that this could happen - those tills are smarter than the average Chinese super computer.
'And you can't believe how much more powerful they would become if they connected to the Tesco mainframe, especially given how much clubcard information the company holds on almost everyone in the country.
'The computers will know all your darkest secrets - how many condoms you buy, when your period is and who still buys battery farmed chicken.
'And do you really want them accessing information on how much alcohol you drink a week? Heck, most people don't even know that themselves.
'I'm not saying it's life-threatening stuff but it's pretty embarrassing, don't you think?'