Ivan Milat died in 2019 - and now experts believe they have uncovered evidence the backpacker killer was responsible for up to TWENTY other unsolved murders. 7NEWS Presents Ivan Milat: Buried Secrets premieres Sunday, 14 March at 7pm on Channel 7 and 7plus. | Sunrise

Ivan Milat, the notorious backpacker murderer, is responsible for some of the most grotesque and brutal crimes in Australian history, but there have long been claims the serial killer did not act alone. In 1996, #60Mins interviewed two of Ivan Milat's brothers who denied their involvement in this chilling interview. Watch the full interview on 9Now: http://9Soci.al/oHfO50KJP4L | 60 Minutes Australia