Original: These were caused, police say, by the electrocution of two boys, Zyed Benna and Bouna Traoré; a third boy, Muhittin Altun, suffered electric shock injury from the power substation they were hiding in.
Simplified: This black-out was caused by the death of Zyed Benna and Bouna Traoré in the power station and the injury of the third boy.