Summerville Police were called to an Old Mill Road address on Thursday about a rock that had been thrown through an office window.  The complainant told police when she arrived to do some work at 150 Old Mill Road, she discovered a broken window and rock was in the floor of the office building.  The complainant also reported seeing a green Honda with rust spots in the parking lot adjacent to the business.  The Honda left the scene when the woman arrived to work.  The owner of the business asked that a report be on file about the incident.