Ram raiders escaped with a cash machine after smashing the front of a post office.
Police were called to Kirkgate Street in Walsoken in the early hours of Wednesday after a low loader was used in the raid.
Cambridgeshire Police was alerted at around 1am but the culprits had fled the scene.
A spokesman said this raid is believed to be linked with another at Yaxley a few hours later, just after 4am, in which a police car was rammed and an officer received minor injuries.
Anyone with information about the Walsoken raid is asked to call officers on 101 quoting incident 19 of 12 January.