This is the second time this month that the authorities questioned the former prime minister.
Move comes as Taiwan expressed anger at Cambodia's deportation of 25 Taiwanese nationals to China.
The government has banned any sort of criticism of the charter in the lead-in to the vote and has already issued notice in May.
Duterte also said that he negotiated for the release of Flor with the help of the Sulu Gov. Abdusakur Tan II.
The final results show 52 percent votes were in favour of quitting the EU while 48 percent voted to remain in the bloc.
Sterling suffers its biggest one-day fall of more than 10 percent against the dollar, hitting a 31-year low.
"We want to show that Indonesia is a big country and we have to show this physically," Widodo says.
Asean warned earlier that China's land reclamation had the "potential to undermine peace".
A Japanese patrol plane saw the Chinese vessel around 3:30 a.m local time.
Seoul official says China and North Korea were notified about this operation.
Mahathir was questioned after he said the 'King is likely under house arrest."
China says at Shangri-La summit it won't stay indifferent to those 'creating chaos in the South China Sea'
Tensions in the South China Sea are set to dominate the Shangri-La Dialogue (SLD) starting Friday.
For peace to prevail, China must show restraint with its territorial disputes in the Asia Pacific.
Now Vietnam can buy American military equipment, train with US forces and challenge Chinese claims in the South China Sea.