He was killed on 24 May 1978 when a bomb attached to his aircraft exploded .
In retaliation , Ugandan President Idi Amin ordered Ugandan agents to assassinate MacKenzie .
Idi Amin was killed on 24 May 1978 when a bomb attached to Idi Amin 's aircraft exploded .
In retaliation , Ugandan President Idi Amin ordered Ugandan agents to assassinate MacKenzie .