A transit van parked in a lay-by was damaged when someone broke into it in Homersfield, near Bungay.
The incident occurred between 6.30am on Tuesday, May 2, and 5.30pm on Wednesday, May 3.
The vehicle had been parked in a lay-by on the B1062, near to the junction with Back Lane.
The rear number plate, a generator and DeWalt cordless drill were among the items stolen from the van. A wing mirror was broken off, and a tyre was also punctured.
Officers are investigating the motive behind the incident and are appealing for anyone who may have seen anything suspicious in the area between these times to get in touch.
Witnesses should call Suffolk Police on 101, quoting crime number 32948/17.
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