KUALA LUMPUR, April 28 -- Umno Youth chief Datuk Dr Muhamad Akmal Saleh has doubled down on his opposition to any "backdoor government", saying his stance has remained unchanged since the Sheraton Move, while taking aim at what he described as inconsistent reactions to similar political crises.

In a series of Facebook posts from last night and this morning, Akmal said he would continue to reject any administration formed without a clear electoral mandate.

"I have maintained the same position since the Sheraton Move until today. I oppose any backdoor government," he wrote in an earlier post.

He stressed that Umno's principles must not be compromised regardless of its political alliances.

"The principles of Umno's struggle have never be...