NOTTINGHAM, Pa. (AP) _ Police found no trace today of an escaped quadruple murderer in their search of a wooded park near the Maryland border, and said the suspect likely left the area in a stolen car.

Norman Johnston, who escaped from a Pennsylvania prison earlier in the week, is considered ``armed and extremely dangerous,'' state police Lt. David M. Presto said today.

Authorities said it was likely that he has left the Nottingham area in a silver Buick that was stolen Friday night.

Local residents described a cautious and curious mood.

``Some people are locking their door,'' resident Jim Murray said this morning as he stopped outside a convenience store. ``There's a lot of curiosity because this is a town that doesn't get a lot of attention.''

Johnston, 48, was spotted talking on a pay phone Friday night but escaped into the 600-acre Nottingham County Park after a scuffle with one of the rangers, said state police Capt. Henry Oleyniczak.

Johnston was convicted in 1980 of killing four teen-agers to cover up a multimillion-dollar burglary ring he ran with his two brothers. The film ``At Close Range,'' starring Sean Penn, was based on the case.

He escaped Monday from a prison where he was serving a life sentence. Police said he opened the window in his cell, sneaked across a grassy yard and wriggled through a fence at the maximum-security complex.