A fourth person has been arrested in connection with the abduction of a shop employee who was forced to help robbers steal a large quantity of cigarettes.
The man was dragged into a car in Keyworth, Nottinghamshire, and driven to Lincolnshire, where he was made to open the Grantham cash-and-carry.
He was left unhurt in a field in Redmile, in Leicestershire, three hours after his ordeal began on 3 November.
Three people arrested previously have been released on police bail.
The man was forced into his car in Wolds Drive, Keyworth, by two masked men.
After taking him to the shop in Gonerby Hill Foot, they loaded the stolen cigarettes into a Mercedes Sprinter van, which they also used to drive him to the field near Redmile.
The fourth arrest, of a man from Northamptonshire, was made on Friday morning.
Retailer Booker, which owns the cash-and-carry, has offered a £10,000 reward for anyone with information about the robbery.