A KTM 300 motorbike was stolen from a property on Nambrok Rd, Denison, last Friday night.
It marked the first in a series of motorcycle related thefts in the region, with the attempted theft of a motorbike trailer from a commercial property on the Traralgon-Maffra Rd at the weekend.
A motorbike trailer was stolen from Temple St, Heyfield, Sunday and three motorbikes were taken from Briagolong during the week.
Police said the stolen trailer was distinctive, having a winch post and back, wired, aluminium mag wheels.
Anyone with information is urged to phone Heyfield police on 5148 2202 or Wellington CIU on 5143 5000.