Prisoner aids inquiry MELBOURNE. Thursday. — A man questioned in Goulburn Gaol this week had given Melbourne detectives "valuable information", the acting chief of the Homicide Squad, Det. Sgt J. Ford, said today. The detectives spoke to the man about the murders of Shepparton teenagers Gary Haywood and Abina Madill, near Murchison, on February, 10 last. Their bodies were found in a paddock on February 26. The man questioned this week had been in Shepparton at the time of the murders, Det-Sgt. Ford said, Detectives would check the information he gave. Since police began their investigations into the murder of the young couple, more than 2.008 people have been interviewed.