Thein Sein’s office has ordered the Myanmar National Human Rights Commission to conduct an investigation into the death of journalist Par Gyi.
Three hundred people gathered in central Rangoon on Sunday to denounce the extrajudicial killing of Par Gyi.
Karen villagers are again in limbo on the Thai-Burmese border, having fled conflict in eastern Burma.
Leaders from six Karen armed groups have formed a task force in order to combat drug production and use in the east Burmese state.
Over 200 displaced people who were evicted from Thameelay village have spent two nights at the Karen border after authorities bar their entry into Karen state.
Unarmed soldiers from the KNU, the BGF and the KPC march together without arms in a show of unity as Karens mark their New Year at Shwe Koko.