JOHANNESBURG - The family of the Madlanga Commission's Witness D are hoping for justice.
Marius van der Merwe's alleged killer is expected to appear in court on Monday.
The suspect has been identified as a former member of the elite SAPS task force.
He's scheduled to make his first appearance in the Brakpan Magistrate's Court.
The specialised task team probing information from the inquiry arrested him in Johannesburg on Saturday.
Police have launched a manhunt for another suspect, believed to be a police reservist.
Meanwhile, Van der Merwe's sister Bianca says the arrest of a suspect in his murder is only the beginning.
She believes more people were involved.