On Tuesday 29 March Somerville Highway Patrol targeted the illegal use of monkey bikes around Hastings and Crib Point.
At 12.30pm a monkey bike was found hidden in bush near the intersection of Hodgins and Frankston-Flinders roads, Hastings, and impounded.
One hour later police were at Crib Point following reports of youths causing trouble on motor bikes near the football oval.
Four motor bikes were subsequently impounded at a cost of $895 each and four youths will be summonsed at a later date for offences including unlicensed driving, use unregistered motor vehicle, drug driving and refuse oral fluid test related offences.
A fifth rider in Crib Point dumped his monkey bike and fled. That bike was also impounded.
Anyone with information about people riding monkey bikes or other unregistered vehicles on public roads should phone Crime Stoppers on 1800 333 000.