Manohar Lodi (31) was taken away by NIA sleuths this afternoon from Gurdakheri village, about 30 km from here, said B L Meena, station in-charge, Hatod town.
NIA had recently arrested Tejaram Singh from Depalpur in the district in the same case.
Sixty-eight persons were killed in the blast on Samjhauta Express near Panipat on February 8, 2007.