The U.S. State Department says it is aware of the latest reported detention.
The Japanese Finance Ministry officials say the senior finance officials from both countries will also hold a separate round of talks.
Reports say all ASEAN members have diplomatic relations with North Korea and five have embassies there.
The Duterte administration organised the Sulu Joint Task Force, a composite military team, to pursue the Abu Sayyaf militants.
The South Korean parliamentary speaker and key officials from the major political parties were among early voters.
Duterte made the announcement following the recent visit of three Chinese warships to Davao City.
The North Korean state media reports that Pyongyang has threatened to attack the Carl Vinson.
An ASEAN diplomat says the statement discussed was a genuine representation of the atmosphere of the Manila meetings.
Trump told a Pennsylvania crowd he was just getting started on meeting his campaign promises.
The negotiation started as early as 2001 when the Philippine government initiated the peace talks and invited the Malaysian government to serve as a third party facilitator.
The 71-year-old leader says he would not raise the tribunal ruling during the ASEAN events this week.
Among those recently killed last week was Commander Muamar Askali also known as Commander Marwan, an Abu Sayyaf sub-leader known for his maritime piracy and kidnapping.
The United States and North Korea have been stepping up warnings to each other in recent weeks over North Korea's development of nuclear weapons.
Moon Jae-in, the presidential candidate of the Democratic Party of Korea, denounces the move of Thaad deployment.
On Monday, Donald Trump called for tougher new UN sanctions on Pyongyang, saying the North was a global threat and "a problem that we have to finally solve".