Canadian supporters of Dong Guangping, a missing Chinese human-rights defender, are disappointed with what they call a disingenuous response from Vietnamese officials to the United Nations.

There has been no word of Dong’s fate since he was arrested Aug. 24 by Vietnamese police.

In mid-December, UN human-rights experts wrote to the Vietnamese government seeking answers about his whereabouts and well-being.

In a recent reply to the UN, the government said it had no information.

Dong’s daughter Katherine Dong, who lives in Toronto with her mother, says she fears he has been handed over to Chinese authorities.

She adds that she wonders if the Vietnamese government is accountable to anyone concerning human rights if it will not answer to the UN.