Police have arrested six people, including a pregnant woman, suspected of entering the UK illegally after they were spotted walking along a main road in the south of the county.
Four men and two women were arrested on the afternoon of Tuesday, February 9 on the A151 Holbeach Road in Spalding, near to the Mcdonalds restaurant.
Reports indicate they were from Ethiopia. Their means of travel into the UK is unknown.
Lincolnshire Police are ensuring their welfare needs are met and the UK Border Agency are investigating.