1. An Edgehill Road resident said he heard a loud altercation between a man and a woman on the street between 9:30 and 9:45 p.m. Police supposed the woman was Jovin and the man was the murderer.

2. According to the police, there was no evidence of a sexual assault. The viciousness of the stabbing suggested that robbery has not been her murderer's motive.

3. Jovin did not appear to have called for help or to have put up a struggle. It appears that she was not running away before she was attacked. So the police supposed the murderer is someone she knows.

4. Less than a half-hour after a woman last saw her in College Street, Jovin lay dying 1.7 miles away at the intersection of Edgehill and East Rock Road. According to some Yale students, to jog to that neighborhood takes at least 20 minutes in good weather. So the Police assumed she was driven there.

5. No murder weapon and physical evidence is found so far.