Two brothers were killed in Cambodia after one detonated a grenade in the midst of an argument over inheritance, local media reported yesterday. Five other family members were also injured, two seriously, in the explosion in the northern province of Oddar Meanchey, The Cambodia Daily newspaper reported. The brothers were former Khmer Rouge soldiers and had a stash of old grenades at their home. One of the men grabbed a grenade as an argument over money from inherited property got more heat. When his brother tried to take it from him, it went off.