or held hostage. more now from cnn's lucy kavanaugh. >> we do not have a suspect at this time. and that individual still out there. we cannot say that there is no threat to the community. >> tonight, with a killer on the loose, police in moscow idaho trying to calm a community on edge. shaken by the brutal killings of four young students. >> but the reality is, there is still a person out there who committed for horrible, horrible crimes. so, i think we have to go back to there is a threat out there still. >> the students bodies were found inside this home across from the university of hydro campus sunday. police say two were at a party on campus, while two others were at a downtown bar. all returned home sometime before 1:45 am. what happened after remains a mystery. >> the four were stabbed with a knife, but no weapon has been located at this time. >> there was no sign of forced entry into the residence.