(Portland, OR)  --  A Beaverton day care worker is accused of sexually abusing two young children.  Police arrested 69-year-old John Gilbreath yesterday on one count of first-degree unlawful sexual penetration as well as two counts of first-degree sodomy and two counts of first-degree sex abuse.  Police say he abused two children under the age of four at Partridge House Day Care, which he and his wife run out of a house on Southwest Partridge Loop.  Police are asking anyone with information on him to contact authorities.