Man jailed for âmost extremeâ child abuse The Caulfield North man must serve a minimum two years and three months behind bars for crimes relating to the child abuse material. Photo: istock. Crime by Melissa Iaria 17th Mar 2021 12:46 PM A Melbourne man has been jailed for four years for possession of what police say is the "most extreme" kind of child abuse material. An investigation into the 43-year-old Caulfield man began in May last year, after reports an online user was accessing child abuse material. Inquiries by the Australian Federal Police-led Australian Centre to Counter Child Exploitation identified a Melbourne man as the user of the service.