Police arrested the Aam Aadmi Party leader from his house this morning and took him to Hauz Khas police station for further questioning.
Police sources said he has been arrested in the alleged fake degree case. An FIR was registered against him last night.
He has been charged under various IPC sections including 420 (cheating).
A police team had gone to Bihar on the direction of court to investigate charges that he had used fake degrees.