But shock new claims suggest the bat may have been used before he shot the beautiful model.
They claim the bruising on her back could have been from a bat and say the incident happened after an hour-long argument broke out.
According to the Daily Maverick, they wrote: “Oscar went after her with a cricket bat – infuriated that she locked herself away from him – and to scare and frighten her, he hit the door with the cricket bat about two to three times and also hit the steel plate against the bathtub wall.”
But the conviction was overturned last December and he was found guilty of murder and will be sentenced in June this year.
The brothers claim that the alleged wounds made by the bat were overlooked by the pathologist who they suggest failed to take the full account of the altercation.
The experts also suggest an argument was heard by neighbour Estelle van der Merwe before the tragic events unfolded.
They wrote: “Van der Merwe said she couldn’t hear the words or language, but judging from the ‘movement’ in the tone of the voice she was confident it came from a woman.
“The female voice was quiet for periods ranging from five to 20 minutes, and lasted for about an hour.”
Source: Daily Star