A number of construction vehicles were damaged in a building site in Onchan.
The offenders broke through fencing to get to the vehicles at a new school site near Heywood Park.
Numerous secured vehicles have been recklessly damaged overnight on Monday.
Officers are urging any witnesses to come forward.
Balladoole's re-use sheds on the agenda in Tynwald
Yellow weather warning issued over snow and ice tonight
Steam Packet carried 680,000 passengers last year
Roof work to shut Castletown shopping street
Church unveils plans to modernise facilities
Are Mountain Road closures harming Ramsey?
No whey! Creamery says goodbye to much-loved butter
Roofing Outlaw plans Isle of Man franchise