The public prosecutor's office in Graz said that the body was found wrapped in a plastic bag, buried near the Austrian border in Szentgotthard-Rabafüzes.
An autopsy will be carried out on Wednesday to confirm that it is the missing 16-year-old Marcel S from Carinthia.
Meanwhile more details are starting to emerge about the 16-year-old boy, Sebastian S, who was arrested after Marcel’s murder in a middle-class area of Graz.
His mother, Gabi S, has spoken to the Heute newspaper and said that a few hours after the shooting her son and her father turned up in Bad Vöslau (Lower Austria), where she was having a spa holiday. “My boy stood before me, howling and trembling all over,” she said.
She said that he confessed to the crime - and told her that he had shot his friend Marcel after he tried to force him, at gunpoint, to rape a 14-year-old girl whom they had invited over.
“This is a huge nightmare for me,” Gabi said. “I think my son was drugged - he is not a murderer.”
However, parents who sent their children to a Kindergarten which Gabi ran in Graz say that official complaints were made about Sebastian’s behaviour when he was younger.
Sebastian and his grandfather are both in custody.