In his arraignment before the US Magistrate Judge Arlander Keys, in the US District Court for the Northern District of Illinois, Headley cited knowledge of all three charges and pleaded not guilty to the charges of conspiring to provide material support to the 26/11 Mumbai attacks and a terror plot in Denmark, including his links with Lashkar-e-Taiba (LeT).
"Yes, your honour," Headley said when he was asked by judge Keys if he understood the charges against him.
Since his arrest in Oct, 2009, Headley was placed in the Metropolitan Correctional Centres and is expected to remain in Federal custody.
The status hearing of his bail plea which was rejected last week will be held on Feb 24 before US District Judge Harry Leinenweber.
David Coleman Headley, co-accused in the case will appear for his arraignment in the same court on wednesday, Jan 27.
Rana and Headley were indicted on Jan 14, 2010 for their involvement in 26/11 terror attacks.