Having treaded lightly thus far, sidelined Umno deputy president Muhyiddin Yassin today aimed straight for president Najib Abdul Razak by telling him to "take a break".

He said Najib should take leave pending investigation on state investment firm 1MDB.

"Take leave momentarily, not resign, just take a break.

"Don't let there be a perception that the prime minister is meddling in investigations.

"If he is not involved, and we pray he is not, come back to serve as prime minister again," he said.