Lincolnshire Police are investigating a report that a man was bundled into a car boot in Spalding last week.
The incident was reported to police on Wednesday, June 20 by a person who said they saw two men pulling another man into the boot of a blue saloon car at around 5pm.
The car was parked near the junction of Winsover Road and West Parade, Spalding.
Police said the alleged victim is described as a white man in his late 20s who was wearing a long-sleeved T-shirt that was purple in colour.
Two men reported to have been putting him in the boot of the car are described as both being white, in their late 20s to early 30s, 5ft 11in in height, and both wearing blue jeans and light coloured T-shirts.
One was of a stockier build than the other. The car is described as a blue Saloon, possibly a BMW 3 Series.
Officers have, in the days following the report, gathered around 300 completed questionnaires from drivers in the area.
They have also been making enquiries, worked on CCTV and sought further witnesses.
However, the exact circumstances still remain unclear.
Police are continuing to appeal for any witnesses to come forward.
Superintendent Phil Vickers said: “We’ve made a number of enquiries since this was reported to us and have managed to corroborate some of the information that was originally disclosed. However, we still don’t know the nature of this incident, which is why we’re appealing to the public.
“We have an open mind as to what we’re dealing with here. It’s possible that this was quite simply a case of hijinks and this was all very good-natured. If that is the case and you were involved, please do let us know.
“You’ve done nothing wrong, and we would much rather know that information than not. On the other end of the spectrum it’s possible that this was a criminal act. If that is the case then we will do everything possible to protect the victim and see those responsible held to account.”
There have been more officers in the Winsover Road area over the weekend making enquiries about the incident.