Kejriwal and Gopal Rai were picked up from outside the Prime Minister's residence while Manish Sisodia and Kumar Vishwas were detained from outside 10 Janpath, the residence of the Congress chief.
Sanjay Singh and another person were detained from outside Nitin Gadkari's residence. The detention came following the gathering of the activists near the residences of leaders as part of their gherao agitation on the coal block allocation issue.
A senior police official said all the six people were being taken to a makeshift jail in Baawana. A spokesperson for the activists said they had not violated prohibitory orders as only two persons had gathered at the spot.
Delhi police warned yesterday against staging a gherao at these places citing violation of prohibitory orders.