Um Authorities News Today

Investigators say there was a white sedan like this one near the apartment where the stabbings happen. officials believe the person that was in the car may have critical information about what happened to the four friends. camila bernal joins us outside the home where the killings took place. police dont have a suspect or a weapon. what does this development suggest? they have a car they are finding interesting in this investigation. that tells us something may be up? >> reporter: its significan...