Eyewitnesses describe a man in a blue shirt who walked calmly away from the crime scene until he was apprehended by police.
A defense lawyer says the court’s decision to fine the politician is not appropriate.
The CNRP leader, who has been living abroad since he was stripped of his legislative immunity, dismisses the verdict as "politics and corruption."
A pair of witnesses have become refugees and some members of the government critic's funeral committee have left or gone into hiding.
Opposition leader Sam Rainsy says the death of the popular pundit follows an old script.
Outpouring of sorrow and respect for slain government critic comes at a time of political tensions.
U.S. diplomat sees bias in recent arrests of political figures and civil society officials.
The move comes amid a U.S. diplomat's visit and a decision by Kem Ley murder witnesses to seek asylum.
On the opposition party's fourth anniversary, its leaders vow to stay the course even it it is personally dangerous.
Admirers praise Kem Ley's courage in tackling corruption and sensitive social issues in his authoritarian country.
Action comes as the government rejects calls for an independent investigation into the death of a popular government critic.
Oueth Ang faces life in prison if he is convicted of killing Kem Ley.
Opposition lawmakers and other government critics say they won’t be cowed by brutal slaying.
Local monks and his family identify man accused in the killing of Kem Ley, but wonder about the motive.
Shock and sorrrow as Kem Ley is gunned down in Phnom Penh amid rising political tensions.
On Facebook, Hun Sen rescinds edict requiring news outlets to use his full title.
Loyalists contend that Global Witness and the media are out to get the prime minister and his family.
Global Witness says wealthy strongman has strangled Cambodia's democracy and corrupted its legal system.
Foreign aid cuts could lead the nation back to the bad old days, NGOs and analysts warn
Despite other countries' concerns, Prime Minister Hun Sen's government keeps up the legal push.