According to Police Scotland, the incident happened last weekend at Caledonian Bottlers, Cumnock Business Park, Cumnock.
A break-in occurred during the evening of Saturday 18 September, before three HGV tractor/trailer units came to the premises in the early hours of the next morning.
The thieves then 'stole a quantity of pallets' containing bottles of Blue WKD, estimated to be worth around £280,000.
The following day, one of the vehicles used in the incident was found 'on fire' on the A76, a major road in southwest Scotland.
A statement from Police Scotland explained: "The break-in occurred during the evening of Saturday, 18 September, 2021 at Caledonian Bottlers, Cumnock Business Park, Cumnock.
"It is then believed that three HGV tractor/trailer units attended the premises in the early hours of Monday, 20 September and stole a quantity of pallets containing 'Blue WKD' alcohol, valued at around £280,000.
"Around 11.45 pm on Monday, 20 September one of the tractor units containing a quantity of pallets of 'Blue WKD' alcohol was discovered on fire on the A76 between Mennock and Enterkinfoot, Dumfriesshire."
Officers in Kilmarnock are now appealing for information as they continue their enquiries, also asking anyone being offered 'discounted' Blue WKD to contact the police.
Detective Constable Hugh Dempster at Kilmarnock Police Office said: "I would like to speak to anyone who has any information on the actual break-in at Caledonian Bottlers or anyone who may have seen a convoy of three HGV vehicles leaving the premises.
"I'd also ask any drivers who were travelling on the A76 towards Mennock, late on Monday evening, to check their dashcam footage as they may have captured one or more of the stolen vehicles.
"Anyone who is offered 'Blue WKD' alcohol at a much-discounted price is also asked to contact police immediately as this may be the stolen alcohol."
Anyone with information is being asked to contact police at Kilmarnock on telephone number 101, quoting incident number 1765 of 20 September 2021.
Alternatively, calls can also be made anonymously to Crimestoppers on 0800 555 111.
After news of the incident was shared on the Ayrshire Police Division's Facebook page, many people tagged their WKD-loving friends to jokingly ask if they had been behind the large-scale theft.
Someone also quipped: "What a Wicked thing to do."
Another joked: "Wow! That's some raid. Inside job written all over it, just look for an employee sporting a bright blue tongue!"
A third added: "Don't think uz will get many folk contacting yez if they get offered discounted alcohol."
Chosen for YouChosen for You
Most Read StoriesMost Read