A speed camera on the Cambridgeshire and Suffolk border is the latest to be destroyed in an arson attack.
The camera was destroyed by fire
Police said vandals targeted a camera on the A1101 between Littleport and Mildenhall near the tiny village of Prickwillow.
A tyre filled with petrol was set on fire around the device, which caused damage estimated at £25,000.
Several cameras in the east of England have been hit by arsonists and airgun pellets over the last few months.
A fixed speed camera site costs about £40,000 to install.