From the Record:
Bergen County Prosecutor John L. Molinelli announced late this afternoon that an autopsy coupled with analysis of the scene indicated the death was the result of a homicide. He stressed that the female body, which was badly damaged by the fire, has not been identified yet and dental records are being sought.They initially reported that Ms. Davis was found dead in her room last night after firefighters were alerted to a possible fire.
Update: The bod has now been identified through dental records as that of Joan Davis. - The Record
Sources tell NBCNewYork: the cause of death was blunt force trauma. Sources have also told me that she had been stabbed multiple times.
A quick google search shows that this is similar to a murder that took place in Palisade Park 4 months ago.
Update: Molinelli said through a spokeswoman that the two crimes were not similar in nature.
Obviously, all the facts are not yet known - but if you see anything suspicious, please call 911.