BANGKOK (AP) — The U.N. refugee agency says Myanmar and Bangladesh are making a second attempt to start repatriating Rohingya Muslims after more than 700,000 of them fled a security crackdown in Myanmar almost two years ago.

Agency spokeswoman Caroline Gluck said Friday that the Bangladesh government has asked for its help in verifying the 3,450 people on a new list of returnees are going back to Myanmar voluntarily. She said the list was whittled from 22,000 names that Bangladesh had sent to Myanmar for verification.

Myanmar's military in August 2017 launched a counterinsurgency campaign in response to an attack by a Rohingya insurgent group. The army operation led to the Rohingya exodus to Bangladesh and accusations that security forces committed mass rapes and killings and burned thousands of homes.