South African athlete Oscar Pistorius will be released from prison for good behavior on Aug. 21 and will be placed under house arrest after serving 10 months of a five-year prison sentence for shooting and killing his girlfriend, Reeva Steenkamp, reported the New York Times.

The double amputee was imprisoned after he was found guilty last October after a seven-month trial. The runner's release does not come as a surprise—South African sentencing guidelines state that non-dangerous convicts should spend only one-sixth of a custodial sentence in jail, according to Reuters.

A statement from the prison said that Pistorius would serve his remaining sentence under "correctional supervision," which is a form of house arrest.

Steenkamp, a 29-year-old TV actress and model, died on Aug. 14, 2013, when Pistorius thought she was an intruder and shot her through a locked bathroom door at his residence in Pretoria. Steenkamp's parents are not happy with the decision to release the athlete. The time he has served is "not enough for taking a life," they said, reported BBC News.

The state won its bid to appeal the homicide verdict and will push for a murder conviction when the hearing takes place in November. Pistorius could face a minimum prison sentence of 15 years if he is convicted of murder charges.