A southern New Jersey man accused of murder in the stabbing deaths of his friend and the friend's mother late last year has pleaded not guilty to all charges.

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Thirty-three-year-old Patrick Latko of Wenonah entered his pleas Monday. He also faces charges of hindering apprehension, tampering with physical evidence and weapons offenses in the deaths of 29-year-old Ryan Patterson and Patterson's 64-year-old mother, Diana.

Prosecutors say Latko repeatedly stabbed the pair in the Paterson family's Hammonton home in November. A motive has not been disclosed, but authorities say the men were acquaintances.

Latko was arrested a few weeks after the bodies were found. The Gloucester County resident remains jailed on $2 million bail.

Ryan Paterson was a well-known rider on the South Jersey amateur motocross circuit.

(Copyright 2012 by The Associated Press.  All Rights Reserved.)

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