49-year-old Tomar, MLA from Trinagar and a first-time minister, was remanded to four-day police custody by a city court hours after he was arrested for allegedly forging his science graduation, law mark sheets and a migration certificate.
Investigators said that an FIR was registered and the Law Minister was arrested after nearly a month-long investigation established that the documents he submitted in 2011 to register with the Bar Council of Delhi were fake.
Parallely, the AAP government and Jung continued their fight over the appoinment of ACB chief and an official who issued the order appointing Delhi Police Joint Commissioner M K Meena to the probe agency.
Stung by the arrest, AAP unleashed a stinging attack on the Modi government accusing it of political vendetta and creating an "Emergency-like" situation in Delhi to avert the city government's crackdown on corruption.
Home Minister Rajnath Singh rubbished the charge saying his ministry did not order the arrest which Police Commissioner B S Bassi said was done within the purview of law and after following due procedures.