Umno president Ahmad Zahid Hamidi is expected to address the concerns of roiled party members at a briefing today, especially the jailing of Najib Abdul Razak, according to a party insider.

The leader, who spoke on condition of anonymity, said there is no plan to use the event to put pressure on Prime Minister Ismail Sabri Yaakob to step down, as many had speculated.

However, he does not discount the possibility that hardcore supporters of...