Delhi minister Satyendar Jain was arrested by the Enforcement Directorate in an alleged money laundering case. The arrest was registered on Monday.
Jain is the minister of Health, Home, Power, and PWD, among others, in the AAP-led Delhi government.
The ED had only recently summoned Jain for questioning in the case. It had earlier questioned him in 2018.
The case is based on a CBI FIR lodged against Jain in 2017 under the Prevention of Corruption Act where he was accused of having laundered money through four companies allegedly linked to him.
Last month, the ED provisionally attached immovable properties worth Rs 4.81 crore belonging to these companies.
Properties belonging to Swati Jain, Sushila Jain, Ajit Prasad Jain, and Indu Jain have been attached in the case arising out of a case of disproportionate assets.