Communications minister Siphiwe Nyanda needs to appear before parliament’s communications portfolio committee to explain his reasons for dismissing his director general Mamodupi Mohlala, the Democratic Alliance said on Tuesday. “It is deeply concerning that the minister seems to have taken this action on his own accord amid allegations that he is trying to centralise the control of departmental tenders in his own authority, apparently without due consultation in cabinet or with the president,” DA chief whip Ian Davidson said.