Olympic and Paralympic athlete Oscar Pistorius, jailed for killing his girlfriend, is to be freed from prison to house arrest next Tuesday, a South African parole board says.He was sentenced to five years in prison in 2014 after being found guilty of culpable homicide, or manslaughter.He shot Reeva Steenkamp through a locked bathroom door but said he thought she was an intruder.The prosecution has appealed, saying he should instead be convicted of murder.