Busselton Detectives are investigating a series of burglaries targeting businesses in Yallingup, Dunsborough, Manjimup and Nannup, between April 14 and 15.
On Sunday night, a white Toyota Hilux with three occupants attended the Ngilgi Cave Tourist site.
The culprits forced entry to the cafe, stealing cash and other items.
Detectives believe the same offenders - in the early hours of April 15 - attempted to steal items from a bicycle store on Clark Street, before breaking into a Café on Naturaliste Terrace, Dunsborough and stealing cash.
They then broke into a store on South Western Highway, Manjimup, and stole motorcycles and protective equipment.
The same vehicle and offenders forced entry into a service station on Warren Road, Nannup where they attempted to steal items.
Anyone with information has been asked to contact Crime Stoppers on 1800 333 000 or via crimestopperswa.com.au
Read more: