Six people were arrested on drug charges on Wednesday of this week.  The suspects included three women and three men, ranging in age from twenty-eight to seventy-years-old. Summerville Police Chief Harold Tucker told WZQZ News on Thursday, that officers received a report about drug activity on Martin Street and responded.  Those arrested included: Kristen Williams, age 28; Michelle Smith, age 50; Holly Sue Marshall, age 48; Rodney Henderson, age 50; Russell Branch, age 49 and Jackie Blackmon, age 70.  More details of the arrests will be released when an incident report is completed by the Summerville Police Department.