Shauman Haq, 27, was arrested near Vikas Marg yesterday following a tip-off by Delhi Police's Special Cell, an official said.
Haq's interrogation is underway and further details are awaited, he added.
Last month, two men with suspected links to the terror outfit were arrested here in two separate cases.
On August 9, the Special Cell had arrested 29-year-old Syed Mohammed Zishan Ali after he was deported from Saudi Arabia.
On August 1, 25-year-old Raja-ul-Ahmed was arrested following a tip-off from the West Bengal Police.