Police are investigating reports of about 20 taxis damaged overnight on Sunday, into Monday (5th-6th March), in the Buckland and Landport areas.
The taxis were damaged in Hanway Road, Grafton Street, Sultan Road and Church Road.
In most of the cases windows have been smashed and vehicles appear to have been searched, although nothing of value has been stolen.
Police would like to hear from anyone who witnessed any of the incidents or any suspicious behaviour in the area.
If you have information, please call 101 quoting 441 7008 4717.