Suspects exchanged fire with wildlife police in two incidents . Five elephants are killed , Kenya Wildlife Service says . More than 16 kilograms ( 35 lb ) of ivory stolen The rangers ambushed the suspects , who allegedly were using axes to hack off an elephant 's tusks after shooting it to death , the wildlife service said . , wildlife service says .
Suspects exchanged fire with wildlife police in two incidents . Five elephants are killed , Kenya Wildlife Service says . More than 16 kilograms ( 35 lb ) of ivory stolen , wildlife service says .