Yon gave him a loaded firearm, said Johannes, and they sat a few tables away from Booysen, who was their target.
Shortly after finishing their soft drinks, they stood up and started shooting at Booysen and his friend Van der Westhuizen. Booysen, who was shot in the arm, returned fire.
Johannes said he accidentally shot his father-in-law when Yon moved in front of him without warning. Johannes then ran outside and drove away.
After an earlier court appearance, Johannes's mother — who did not want her name published — said her son first went to prison when he was 15 after being convicted of murder.
Sources at the scene of the Spur shooting said Yon had tattoos indicating affiliation with the Hard Livings gang.
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