Kou Voravong
The attack occurred at approximately 22:15, at Phoui Sananikone's, an official residence nearby the Voravong family's. The attackers launched three grenades by one of the windows on the ground floor, in the dining room. They fired three or four pistol shots and then run away. Kou voravong, sitting with his back to the window, was directly hit by a bullet which came in by the kidney and out through the navel, after cutting the vena cava and crossed the liver and intestines. His dead is declared shortly after admission to hospital. A dozen people were injured by the explosion of the grenades, slightly for most of them.
Kou Voravong
King Sisavang Vong declared officially the French protectorate's continuity. But on September 11, his cousin and Viceroy, Chao Phetsarath accompanied by his two brothers, Chao Souvanna Phouma (ເຈົ້າສຸວັນນະພູມາ) and Chao Souphanouvong (ເຈົ້າສຸພັນນຸວົງ), supported by Chinese and Viêt Minh nationalists, 
proclaimed the Lao Issara Government and required the immediate independence of Laos, refusing all discussions with France. Therefore, struggles between different factions started out.