Investigators still looking for suspect in Idaho quadruple homicide

Investigators in Idaho have not yet identified a suspect in the brutal quadruple homicide of four University of Idaho students that occurred nearly a week ago.

"At this point, the investigators are looking at all possibilities. They don't have a specific suspect," Latah County Prosecutor Bill Thompson told the Today show late this week.

"We're really hoping for any information from the public to help recreate everyone's activities," Latah said.

The victims, all in their early 20s, were found dead on Sunday after police responded to a call of an unconscious individual in the apartment near the university campus. 

Latah County Coroner Cathy Mabbutt told NBC News this week that the killer likely used a large knife to carry out the murders. 

"We have had multiple murders in the past, but nothing like this with four college students," she said.