TENAFLY, N.J. - The bodies of three people found inside a Tenafly home Friday night were so badly decomposed that their identities will have to be confirmed via dental records, the Bergen County Prosecutor's Office said yesterday.

Authorities had hoped to have a relative identify the bodies, but those plans were scrapped yesterday because of their condition, said Frank Puccio, the executive assistant county prosecutor.

Officials might be able to confirm the identities this week, Puccio said, adding that authorities believe the three - an elderly male, an elderly female, and a younger male - lived in the home.

Each had stab wounds, and authorities said the bodies could have been in the home as long as a week.

Meanwhile, authorities searched for clues and a motive.

Neighbors said investigators had searched the entire block - including sewers - for clues late Friday and yesterday, but it was not known if evidence had been recovered.

Authorities said that the house had not been ransacked, and that there were no signs of a struggle.