Translate the following English sentence to French:
"Alongside George Speight and his gang, when the people's coalition government were taken hostage on 19 May, were members of the armed forces' counter-revolutionary warfare unit."
Lorsque George Speight et son gang ont pris en otage le gouvernement de coalition populaire le 19 mai, ils étaient accompagnés de l'unité contre-révolutionnaire des forces armées.