Police investigating the death of a 21-year-old man who was allegedly kidnapped from Essex are trying to find his missing pair of Louis Vuitton trainers. Essex Police believe Jack Sullivan, from Waltham Abbey, was “taken” from the town on June 22. During the alleged incident, he was “seriously assaulted and sadly died as a result of his injuries”, Essex Police said on Saturday, July 18.

Police previously said on July 2 that Mr Sullivan had been found on June 22 seriously injured in a car park in Cheshunt, Hertfordshire. He was taken to hospital, but despite the best efforts of medical experts, he died on June 26, officers said at the time. Now, as part of their murder investigation, detectives have announced they are seeking the public’s help to find Mr Sullivan’s blue Louis Vuitton trainers, believed to be worth around £1,000.

Police believe someone will either be wearing the designer shoes or trying to sell them.

The force has also released a photo of a black Mitsubishi, which police believe was “used in the kidnap” and has now been recovered.

Upon releasing the pictures and update on the probe, Essex Police asked people to come forward with any information which may help their investigation.

At this stage, three people have been arrested on suspicion of murder and have been released on conditional bail, officers said.

On Saturday, Detective Chief Inspector Greg Wood, who is leading the investigation, said: “We believe Jack was taken and carried in a black Mitsubishi Outlander that was bearing the registration HY16 FZR – although this is not the vehicle’s true registration plate.

“We know the vehicle was stolen from an address in Loughton on June 3, and we are keen to hear from anyone who may have seen this vehicle between June 3 and June 23, when we know it was abandoned in River Close, close to Fishers Close, in Waltham Cross. We are equally keen to hear from anyone who may have seen the vehicle abandoned on this day.

“We are also asking for help to find Jack’s Louis Vuitton blue trainers, which have not been recovered.

“The trainers are worth in the region of £1,000 and we believe someone will either be wearing them – perhaps with no knowledge of their prior owner – or attempting to sell them.”

Mr Wood added: “At the heart of this investigation is Jack and his loved ones. We are determined to provide answers for them, and I would again encourage anyone with information on the Mitsubishi Outlander or the blue Louis Vuitton trainers to please come forward.”

Anyone with information is asked to provide it on Essex Police’s public portal.