Although Oscar Pistorius was found not guilty of murder and sentenced to a five years in prison for the fatal shooting his girlfriend, there is still a possibility that the South African track star could face a murder conviction and 15 years behind bars.

In September, the Paralympic athlete, also known as the "Blade Runner," was found not guilty in the 2013 shooting death of Reeva Steenkamp. The Olympic champ argued that he shot her on Feb. 14 by mistake because he thought she was a home intruder.

Judge Thokozile Masipa acquitted him of murder charges, but found him guilty of culpable homicide, a lesser charge that is comparable to manslaughter.

She then sentenced the double-amputee runner to five years at Pretoria's Central Prison earlier this week, but he is only required to serve 10 months behind bars before he can be moved to community supervision or house arrest.

However, his time in prison may be extended if prosecutors seek an appeal in the case. According to prosecution spokesman Nathi Mncube, chief prosecutor Gerrie Nel has sought consultation from Prof. James Grant, a criminal law specialist at Johannesburg's University of the Witwatersrand.

"We are busy. We are considering appealing," Mncube said, The Associated Press reports.

Grant, a legal TV analyst, wrote on Twitter that he had advised prosecutor Nel to appeal the judge's decision and agreed to help him do just that.

"I can confirm Adv Nel has consulted me for advice & assistance if he appeals. I have advised that he should appeal & agreed to assist," he tweeted on Friday.

Some legal analysts say that there are grounds for an appeal because the judge may have misapplied "dolus eventualis," a South African law that states that someone should be found guilty of murder if they foresaw the possibility of killing someone and went ahead anyway. The experts argue that Pistorius could have easily predicted that someone might have died when he decided to shoot into a closed bathroom in his home, striking Steenkamp in the hip.

"There appears to be nothing to save us from the inevitable conclusion that Masipa made errors of law and errors of logic," wrote Prof. Grant in an online analysis of the case.

Prosecutors have two weeks from Tuesday to apply for permission to appeal. It is likely that prosecutors will appeal Judge Masipa's decision to acquit the world-famous runner of murder.