Sudan has been embroiled in devastating conflict between SAF and RSF since mid-April 2023.
ICRC said the protection of civilians and unhindered humanitarian access are legal obligations.
The South African Civil Aviation Authority said the impact sent the helicopter crashing to the ground.
Just five years ago, he barely existed in Gabon's public consciousness.
The charge is connected to his nationwide campaign pushing for electoral reform under the slogan "No Reforms, No Election".
Echoes of War is set in a fictional kingdom where the youth have lost faith in their leaders.
His campaign slogan - using his initials "C'BON" - is a play on the French words "c'est bon", meaning "it's good".
The jihadist group has recently staged several deadly attacks and even seized control of some districts.
US Department of State spokesperson Tammy Bruce said the three were "in our custody".
