Convicted murderer and former Olympic athlete Oscar "Bladerunner" Pistorius has been warned he could become a target for assassination after his release from prison this Friday, sources say. 

It is alleged that Pistorius has been told by police that he could be killed in retaliation for the murder he carried out of his girlfriend Reeva Steenkamp. Threats are said to have come from underworld figures reported to be sympathetic to the slain girl’s family. 

Pistorius will stay in a cottage, or the three-story mansion, in the fortified compound belonging to his uncle, Arnold, in Pretoria, South Africa. The compound has armed guards, electronic defenses and reportedly several "attack dogs." It’s situated in the exclusive Waterkloof suburb, an area known for housing embassies, overlooking Pretoria.

Steenkamp’s father, Barry, died last year, but her mother, June, has hit out at Pistorius for never showing remorse. The double amputee killed Steenkamp by pumping four bullets from a pistol through the door of a bathroom she was sitting in. 

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Reeva Steenkamp and Oscar Pistorius pose together Jan. 13, 2013

Reeva Steenkamp, pictured with her killer, Oscar Pistorius. Threats against Pistorius are said to have come from underworld figures connected to the slain girl’s family. (Waldo Swiegers/Mike Holmes both via Getty )

Pistorius claimed he was awoken by noise and thought she was an intruder. Neighbors claimed they heard arguing from the direction of the house before they heard the shots. The prosecution said Steenkamp was hiding in the bathroom from Pistorius.

The pressure group Women for Change this week tweeted, "Oscar Pistorius is a murderer and he belongs behind bars to serve his full sentence. Justice was never served. He never took account."

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Blade Runner Oscar Pistorius crying in court, red eyes, hands held in front of his mouth, wearing a grey shirt

Pistorius is due to leave prison and be driven directly to his uncle’s house. (Alon Skuy/AFP via Getty Images)

During the murder trial, a self-confessed hit man and reported friend of the Steenkamps turned up one day and was seen by Fox News Digital staring intensely at Pistorius in court, but didn’t say anything in the courtroom and wouldn’t talk to this reporter outside. 

Pistorius is due to leave prison and be driven directly to his uncle’s house. 

Singabakho Nxumalo from the Department of Correctional Services appeared to lend credence to the alleged threat on Pistorius’ life in a statement when he said, "The details in terms of transportation plans and time of release shall not be made public. Disclosing such details may result in a security threat for the inmate and other stakeholders involved."

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Oscar Pistorius as he leaves the courthouse

Part of Pistorius’ parole terms state that he cannot profit in any way from Steenkamp’s death. (Mike Hutchings via Reuters)

His statement continued, "South Africa opted for a victim-centred criminal justice system. As a result, inmates and parolees are never paraded. Therefore, media opting to camp outside any correctional facility may not be prevented from carrying out their work, as per their line of duty, but it would not be possible for them to get shots nor moving visuals of Pistorius."

Part of Pistorius’ parole terms state that he cannot profit in any way from Steenkamp’s death. Officially then, no fat check for a TV or book deal. The Correctional Services’ statement added, "Just like other parolees, Pistorius is restricted from conducting media interviews. The general parole conditions will apply to Pistorius. For example, he will be expected to be home at particular hours of the day. He may not consume alcohol and other prohibited substances."

And then there’s the anger management issue. 

Oscar Pistorius

Pistorius celebrates as he wins gold in the men's 400m final at the Paralympic Games  in London on Sept. 8, 2012. (Michael Steele/Getty Images)

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In court, a text from Steenkamp to Pistorius was read, stating: "I’m scared of you sometimes, of how you snap at me."

In the months leading up to Steenkamp’s death, a friend of Pistorius' was reportedly worried about his fits of temper and whether he should be permitted to have a licensed firearm. The man talked to Fox News Digital anonymously, for his personal safety. 

It’s not clear whether any anger issues have been resolved, but the parole conditions reportedly also include that Pistorius must attend anger management training. He will be on parole until at least late 2029.