Manoj Kumar, elected from Kondli, was taken into custody in a case of alleged land grab.
He has seven cases against him, including one of assault, a police officer told IANS.
Manoj Kumar is among the 21 Aam Aadmi Party legislators against whom Delhi Police have reportedly decided to file chargesheets in connection with criminal cases registered against them in the national capital.
These 21 include Chief Minister Arvind Kejriwal, who faces three cases, as well as Deputy Chief Minister Manish Sisodia and Speaker Ram Niwas Goel. (IANS)