H J P BOTHA
What happened after his arrest, I'm assuming now is that the investigating teams, that would have been the investigating team's activities and in their opinion Charles Ndaba was a member of Operation Vula who had to be arrested.  They would have done everything in their power to track him down.  The fact that the family's home was visited after he started giving information as an informer in 1988 is also not strange.  The family would not get preferential treatment simply because a person was an informer.  On the contrary, it would remain as it was beforehand.