emerged that detectives spent just over an hour at the repairman 's house in bonny hills on the nsw north coast on monday afternoon .
the 63-year-old 's home had been searched earlier in the year , in january and march , after it was unveiled that he was due to fix william 's grandmother 's yard in broad daylight in a quiet street in kendall last september .
police have returned to the home of bill spedding for the third time this year - a person of interest in the case .