A U.N. human rights envoy says her whirlwind visit to Myanmar was marred by disappointments: She was barred from meeting long-persecuted Rohingya Muslims. Talks with several high-ranking officials were denied or cancelled at the last minute. And when she met with government critics, security officials were there, quietly snapping pictures.

Yanghee Lee was in the Southeast Asian nation to assess the human rights situation ahead of general elections — the second vote since the former dictatorship began its bumpy transition to democracy just a few years ago.

But she said Friday the lack of access and serious disruptions to her program made it impossible to fulfill her mandate.