Darbhanga district Congress leader Ramnarain Jha filed a complaint against Choubey in the court of Chief Judicial Magistrate G K Shrivastava for "filthy" comments against the AICC president and vice president.
Addressing a BJP workers' meeting at Rajauli in Nawada district on Thursday night, Choubey had described Sonia as the demonic mythical character 'Putana' and referred to Rahul as a parrot.
His lawyer Pawan Chaudhary said they have urged the court to direct registration of case against Choubey under IPC sections 153-B (imputations, assertions prejudicial to national integration), 500 (punishment for defamation) and 504 (intentional insult with intent to provoke breach of peace).
He said the CJM has admitted the complaint and transferred the matter to First Class Judicial Magistrate court which will hear it on June 30.
A large number of Youth Congress workers held a dharna outside a hotel in Buxar where Choubey is staying.
Buxar Sub Divisional Officer (SDO) Gautam Kumar and Sub Divisional Police Officer (SDPO) Sunil Kumar are on the spot and are trying to convince the protesters to end the stir.
State Youth Congress president Kumar Ashish told PTI in Patna that agitation would continue till the MP tenders a written apology for "demeaning" remarks on Sonia and Rahul.
