confessed to taking their lives. it may not be over yet. here's more from abc's john ehrlichman. >> reporter: 19-year-old africa hardy was found strangled to death at this motel 6 in hammond, indiana. 43-year-old gary resident in custody confessed to killing her but allegedly also claimed he's been killing in indiana for years. >> it could go back as far as 20 years based on some statements we have. >> reporter: van, a registered sex offender in texas, solicited women on chicago back page which is like craigslist but with an adult services section. police say hardy was in a prostitution ring advertised on back page and had an arranged meeting with van. they tracked van down through his cell phone. he confessed to hardy's murder and many more. >> reporter: van allegedly led police to six more female bodies in abandoned homes, including 35-year-old anith jones reported