Authorities in the past week have investigated residential burglaries on upper Elm Street and Gerrish Lane, according to New Canaan Police Chief Leon Krolikowski. In both incidents, “incidents windows were broken or sliding glass doors were forced open,” Krolikowski said in a press release. “We urge all New Canaan residents to activate their alarm systems, secure all valuables, lock all windows/doors, report suspicious persons or vehicles to our Department via 911” and follow the following safety tips, he said. • Be Wary of Unknown Visitors: Always check the identity of visitors before admitting them to your home. Often unsolicited offers to perform work (chimney repairs, driveway repairs, etc.) are scams or a ruse to commit a crime.