The rupiah has slumped while the benchmark stock index has tumbled 36 per cent to become world's worst performing. Read more at straitstimes.com. Read more at straitstimes.com.

Indonesia stocks also sank to a five-year low. Read more at straitstimes.com. Read more at straitstimes.com.

The JCI fell by as much as 5 percent in the first trading session on Wednesday, while the rupiah weakened to Rp17,930 per U.S. dollar.

Markets face mounting pressure from fiscal concerns, new export controls