Cambodian Prime Minister Hun Sen has ordered a probe into the death of a prominent environmentalist during a confrontation with military police, as a UN human rights official expressed deep concern over the incident. Hun Sen said in a directive that the panel must make a clear report to him on the death of Chut Wutty. The environmentalist was killed Thursday as he accompanied two journalists investigating illegal logging in a protected forest. Military police say an officer shot Chut Wutty after they got into an argument and then killed himself.—AP