Detectives have said it is increasingly likely two men involved in the attempted abduction of a serviceman at RAF Marham were part of a larger team.
Police have widened their appeal for information and are urging motorists to come forward who travel in the area regularly and use dash-cams.
Officers are keen on hearing from people who live in the Marham area and have private CCTV systems and those who travel regularly travel in the area by car and use a dash cam or a helmet camera if using a motorcycle/pedal cycle
The police cordon of the attempted abduction scene on Squires Hill was lifted on Friday night before 7pm and the road has now been reopened following the incident on Wednesday.
Detectives continue to carry out enquiries in and around RAF Marham with local officers providing reassurance patrols which will continue over the weekend.
The team is also receiving support from officers at the Metropolitan Police Counter Terrorism Command.
Senior investigating officer, detective superintendent Paul Durham, from the Norfolk and Suffolk major investigation team, said extensive enquiries were ongoing and revealed that there could have been more than two people in the vehicle, a dark coloured people carrier, used by the suspects.
Detective superintendent Durham said: “While the victim only witnessed two attackers, there may have been more than two people in the vehicle and given the nature of the attack, it is likely they were part of a larger team.
“This is important because I do not want to deter any potential witnesses from coming forward; it is the vehicle we are interested in, regardless of the number of people seen inside.
“Another area of interest is any dash-cam footage motorists travelling in Marham or the King’s Lynn area may have which they think could be useful to us.
“Many people now use these devices and they may contain something that the driver or rider isn’t aware of so I would urge people to review their footage from the week leading up to the incident and contact us if they feel it could assist the enquiry.”
Officers are also appealing to anyone who lives, works or was visiting the area in the week leading up to the incident and the day itself.
Det supt Durham added: “We’re keen to hear from these people as they might have noticed something out of the ordinary in the days leading up to the incident, which could help us build a bigger picture.
“The residents in Marham know their community better than anyone else and it’s these people I really want to target; have you see people or a vehicle which looks out place? “At the time it may have seemed insignificant but please contact my officers and let us decide if it’s relevant or not.”
Yesterday, police appealed to shoppers at the Costcutters store, known locally as ‘Costco’, on Squires Hill to come forward after CCTV revealed a number of people used the store around the time of the incident and could have seen the vehicle involved in the incident.
Officers are looking for two suspects.
The first is described as between 20 and 30 years old, approximately 6ft tall, of athletic but stocky build, with dark hair which was long on top and had a well-groomed beard.
He was of Middle Eastern origin in appearance with a dark skin tone and wore dark casual clothing.
The second suspect is described as between 20-30 years old but younger than the first suspect and of a slimmer build.
He was approximately 5ft 10, clean shaven with short dark hair. He was also of Middle Eastern origin in appearance and wore a white t-shirt and dark shorts.
Witnesses are urged to call dedicated hotlines set up on either 0800 056 0154 or 0207 158 0011 or 101 with any information.