Following Pakatan Harapan's defeat in the Rantau by-election on Saturday, Negri Sembilan Mentri Besar Datuk Seri Aminuddin Harun told reporters that the ruling coalition would find out why they lost in the by-election.br br When the press highlighted a possible sabotage by its own allies, Aminuddin said they would investigate and see if there was any truth in such claims.