"Yes, he (Headley) will be pleading guilty on March 18," John Thief, Headley's lawyer said.
The Chicago Court has scheduled the 'change of plea' hearing for Headley as Mar 18.
"...scheduling David Coleman Headley for a change of plea hearing on March 18, 2010, before US District Judge Harry Leinenweber," the court entry read.
Thief said that the discussion with the government regarding the plea bargaining was going on.
"We are working on it and negotiating the plea deal. Yes, I expect this is what is going to happen on March 18," he added.
Meanwhile, US Attorney spokesperson Randall Samborn, said that he was not in a position to comment whether Headley is changing his 'not guilty' plea or a deal has been struck between him and the government.
Samborn said that Headley would be present for the hearing.
Earlier, Headley, who was indicted on 12 charges, had pleaded not guilty to all the charges against him, all of which carried a death penalty
Headley's status hearing was scheduled for Mar 23 in the US District court in Washington.
The Pakistan-American was arrested with co-accused Tahawwur Hussain Rana on Oct 2009 by the FBI. The FBI has said that the Headley has been cooperating in the investigation.