Amanah chief Mohamad Sabu said the party has always known that PAS was working with BN, even before the 14th national polls in May last year.

Therefore, its alliance with BN, which some PAS leaders have denied, is no longer a secret, said Mohamad, better known as Mat Sabu.

"They (PAS) used to work underground, now they are working with BN above ground," he said...