US Secretary of State Mike Pompeo, who arrived in Pyongyang on Tuesday, is excepted to finalize the release of three US citizens that are being held captive in a North Korean labor camp, Yonhap reported on Wednesday, citing a South Korean presidential office official. Pompeo is on his second trip to North Korea, which is primarily focused on thrashing out the details and the agenda of the highly-anticipated meeting between Kim Jong-un and Donald Trump later this month. "We expect him [Pompeo] to bring the date, time and the captives," the official said. Korean-American missionary Kim Dong-chul and Korean-American academics Kim Sang-duk and Kim Hak-song are expected to be turned over to the US.