(Portland, OR)  --  Police say they've arrested four people in connection with a series of marijuana shop burglaries.  Police responded to alarms at various dispensaries on Northeast Broadway, MLK and Sandy Boulevard early yesterday morning.  A witness called 9-1-1 and gave police a description of the suspect vehicle, allowing officers to track down the car at Southeast 92nd and Powell.  Officers arrested one adult and three juveniles inside the vehicle.