The M&G has suggested that the arrest of African National Congress MP Tony Yengeni might be a diversionary tactic. Raids this week on companies and individuals linked to the corvettes component of the arms package indicate we were unfair. It seems prosecutions director Bulelani Ngcuka is doing his damnedest to conduct a proper investigation - and that he is encountering official obstruction and political pressure.

Our point is a simple one: the arms deal mess will get messier for the government if there are perceptions of a police cover-up. Ngcuka should be given every assistance, and left alone to do his job.

With acknowledgment to the Weekly Mail and Guardian.