Overseas investors disposed of a combined net total of $5.08 billion in Indonesian, Thai, Malaysian, South Korean and Indian bonds last month, marking the biggest monthly outflow since March, regulatory data and bond market associations showed.
The emerging Asia bonds were hit by a surge in US yields and a jump in the US dollar, making the riskier assets less attractive.
As major central banks are looking to hike their interest rates in their efforts to combat soaring inflation levels, further outflows can be expected from the regional markets, analysts said.