Some tense moments in Cambridge today. Business came to a sudden halt at the Ames store in Cambridge after employees found a suspicious powder in one of the boxes they were opening. Around 8:15 this morning Health Department Officials recieved a call by the Cambridge Police Department about a potential incident. The Cambridge Fire Department responded and took the proper precautions. The substance was bagged , but has yet to be tested. Health Department officials are waiting to hear back from Ames Corporate headquarters before taking further action.