A taxi driver was injured as he was robbed of his takings in Lincolnshire.
The driver picked up two men and two women on Broad Street in Stamford at about 0130 BST on Sunday.
He dropped the women off in Grantham and the men asked him to stop at Gonerby Road where they restrained him and stole his takings.
The offenders left the scene in different directions, one towards town and another towards Arnoldfield Court. Police have appealed for witnesses.