UNenvoy visits prison

U.N. human rights envoy who returned to Myanmar after a four-year ban Monday visited a notorious prison for political prisoners as he began an investigation into how many people were killed or detained in a crackdown on pro-democracy demonstrators.

Paulo Sergio Pinheiro, the U.N.'s independent rights investigator for Myanmar, has said he is determined to gain access to the prisons and other sites to assess allegations of abuse by the ruling military junta.