David Headley, who has pleaded guilty to his involvement in Mumbai attacks, went for training with LeT while he was still working as an informant with the US government's Drug Enforcement Administration (DEA).
Testifying before a Chicago court during the recently-concluded trial of co-accused Tahawwur Rana, Headley conceded that he was still working with DEA when he first attended an LeT meeting in 1999.
"Yes," Headley told the court, when the defence attorney for Rana asked: "1999 (the year when Headley visited Pakistan for Lashkar meeting). But you were still working with the DEA when you went into the first Lashkar meeting, where you made a donation, correct?"
"Did you report to the DEA that you had gone to Lashkar meetings?" Headley was asked, to which he replied in negative.
"When you say working for the DEA, I was signed because I would sign up for periods of time. So I was working for them but not on any case at that time. I was signed up with them at that time," Headley clarified soon thereafter.
Responding to the questions from the defence attorney, Headley said even though he was not assigned any particular task by DEA, he was in contact with them and was under obligation to tell them if he came to know something of interest to them.
Headley told the court that he started attending LeT meetings on a regular basis from 2000 onwards and that Kashmir was the prime motivation for him to join this Pakistan-based terrorist outfit.
Headley said he started going for LeT training soon after the 9/11 attacks in the US.
He also conceded that he was called by FBI for questioning after there was a complaint against him.
During the FBI questioning, Headley was confronted about his anti-American statements and his wish to fight 'jihad' in Kashmir.
And instead, he told the FBI that he was working for the US government trying to infiltrate mosques, etc.
"I had visited, on the instruction of a DEA agent, one mosque, and I told him that I had," Headley told the court in response to a question from the defence attorney.
"So you covered those statements by saying, I am working for the United States; I am going into mosques working for you. Correct?" the defence attorney asked.
"Yes", Headley said, adding that he stopped working for the DEA in September next year.