Parti Amanah Negara (Amanah) president Mohamad Sabu delivered a fiery speech in Semenyih last night targeting his former party PAS.<br /><br />Mohamad questioned why PAS hasn't been open about its cooperation with Umno.<br /><br />Umno and PAS started working together after BN was defeated in the 14th general election in May last year.<br /><br />Their cooperation further strengthened when the parties reached mutual agreement on candidates for a series of by-elections since the nationwide polls.