Kimberley - The Griekwastad farm murderer was not used by anybody else or influenced by anybody to commit the Steenkamp murders, Northern Cape Judge President Frans Kgomo said on Wednesday.
Kgomo sentenced the 17-year-old to 20 years imprisonment for each of the three murder convictions, 12 years on a rape conviction and four years for lying to the police. All sentences would run concurrently.
"DD [has] shown no remorse," said Kgomo in referring to the teen.
"I am satisfied that he was not influenced by anybody else in committing the crimes."
Kgomo said the teen had even falsely implicated others in his explanation of possible reasons for what happened on the Steenkamp farm on the night of the murders.
On 27 March, the court found the boy guilty of the murders of Griekwastad farmer Deon Steenkamp, 44, his wife Christel, 43, and their daughter Marthella, 14.
They were shot dead on their farm Naauwhoek on 6 April 2012.
The boy was also found guilty of raping the girl and lying to the police.