Malele Atofu was arrested and locked in police custody for the second time.
Prime Minister Tuilaepa Sailele Malielegaoi is alleged to have been defamed in the first social media video rant by King Faipopo which resulted in his arrest three months ago.
Tuila'epa is one of the prosecution witnesses in the case against Faipopo.
The defendant's application for the matter to be quashed because Samoa has no jurisdiction to hear the case will be heard next Monday.
