Police are trying to trace a group of men after objects, including a hammer, were thrown at taxis parked in Spalding town centre.
Two taxis were damaged while parked at the junction of Red Lion Street and New Road, near The Punchbowl, when the incident happened some time after 1am on Monday.
A hammer was later recovered by police who are treating the incident as criminal damage and anyone with information should call 101, quoting incident number 7 of August 5.
Meanwhile, two vehicles had their wing mirrors damaged while parked in Westlode Street car park on Friday some time between 1.45pm and 9pm.
Anyone with information should call police, quoting incident number 510 of August 2.