. >> police say the officer performed cpr but christopher dodd at the hospital. the state medical examiner ruled his death a homicide, the cause listed as asphyxiation. a source tells us the officer put christopher in a choke hold. his family struggling to understand how and why this happened. >> where are you doing? what is going on? could you pull him out and talk to him? it did not have to go this way. he is dead. >> police are conducting an internal investigation in the incident. the state's attorney's office will be the ones to decide if any charges are filed. >> also in baltimore county, a domestic related barricade forcing a high school in to lockdown. police were called to woodlawn around 8:00 this morning to reports of a man barricaded inside a home. we are told the man was ultimately taken into custody without incident after about three hours. his live-in girlfriend and her sister managed to escape. prison for couple convicted of holding prisoner and assaulting a 22-year-old one for nearly nine months. the girlfriend will spend 40 years behind bars. duri