Sometime between 20:00 on Saturday 31 July and 01:00 the following morning, numerous motorcycles were pushed over causing extensive damage.
During that same timeframe, vehicles parked on the neighbouring Monument Road were also subject to damage with numerous wing mirrors being targeted.
Guernsey Police are currently in the process of viewing CCTV from surrounding homes and businesses. Police are also keen to speak with individuals who have information concerning the damaged vehicles, including dash cam footage.
Anyone with information that could help the investigation is asked to contact PC 159 Bourgaize or DC 107 Hockey on 222 222 or to contact CrimeStoppers anonymously on 0800 555 111.