Heinze's attacks on three backpackers

ROMAN HEINZE'S TWO SEPARATE ATTACKS ON BACKPACKERS:

2016 SALT CREEK ATTACKS

* Two female backpackers are attacked on the rugged sand dunes at Salt Creek by 61-year-old Roman Heinze who they meet after one posts an advertisement on the website Gumtree seeking a lift from Adelaide to Melbourne.

* A Brazilian woman is thrown down on the sand, her arms tied with rope. Heinze then takes out a knife and cuts off her bikini before indecently assaulting her.

* Heinze then goes after the German backpacker with a hammer, hitting her in the head four times. As she tries to flee he also drives at her in his 4WD, knocking her down several times.

* A jury found Heinze guilty of six charges including indecent assault, aggravated kidnapping and endangering life but not guilty of attempted murder.

2014 ATTACK:

* Heinze pleaded guilty to indecently assaulting another backpacker at a property in Adelaide's south in 2014. He had also agreed to give the woman a ride interstate.