Armed raiders targeted a security van at Tesco in Ely yesterday afternoon.
Offenders, who were believed to have been armed with a shotgun, struck a blue Group 4 Securicor van in the city just after 4pm.
Police cordoned the area off with trolleys and a helicopter was deployed to search the local area.
The offenders made off in a black Subaru, which was dumped in Potters Lane, near Angel Drove.
They exchanged the Subaru for a BMW and drove off along the A10 towards Cambridge.
When they were south of Stretham, near Gullivers Restaurent, they collided with another vehicle, but they pulled away and drove straight off.
Detective inspector Adam Gallop said: “If anybody was driving behind this BMW or saw the drivers or their direction of travel please contact police at Parkside police station.”
Courtesy of Cambridge Evening News.