Authorities have charged 42-year-old Jose Diaz for the murder of 69-year-old Carol Ambruster.
Ambruster was found stabbed to death in her second floor apartment on the 5500 block of Wayne Avenue on December 9th.
She had been stabbed multiple times in her chest and neck area.
Police say Diaz, a sub-contractor, had access to the victim's apartment on the day of the murder. No word on a motive.
Ambruster was an assistant professor of astronomy and astrophysics at Villanova University until she retired two years ago.
