These prisoners include some jailed under one of the world's toughest laws against royal insult.
Azam Saigol only cited personal reasons for his resignation, without offering details.
The trial is seen as a test of religious freedom in the world's largest Muslim-majority nation.
Whether the scandal-hit South Korean President Park Geun-hye could attend the meeting remained uncertain.
A female would-be suicide bomber and militant suspects were allegedly planning to attack the presidential palace this weekend, said police.
Trump criticized Australia's contentious Joint Strike Fighter program by describing its costs and delays as "out of control."
South Korean Prime Minister Hwang Kyo-ahn begins getting official briefings from aides of President Park Geun-hye on Monday.
The statement came ahead of summit meetings between President Vladimir Putin and PM Shinzo Abe on Thursday and Friday.
The sweeping advances in Aleppo pushed rebels to the brink of collapse in a shrinking enclave packed with civilians.
English, who was the sole contender for the job, announced Social Housing Minister Paula Bennett as the deputy leader.