ICE spokesman Brian Hale said the information was revealed during an immigration court hearing in Boston for Aftab Ali Khan. The envelope had a phone number on it that investigators concluded was Shahzad’s.
Aftab Ali Khan and his uncle, Pir Khan — along with a third man, Mohammad Rahman — are believed to have been involved in an informal money transfer network that provided cash to Shahzad, U.S. officials said. But the Khans’ lawyer, Saher Macarius, has said they had no connection with Shahzad.
Macarius did not immediately return calls seeking comment on Thursday. However, on Wednesday he told CNN his clients do not know Shahzad, who is accused of leaving a faulty car bomb in Times Square on May 1, and did not give him money.
Pir Khan and Aftab Ali Khan were arrested during law enforcement raids last Thursday in Massachusetts. According to the Pakistani consul general in Boston, Pir Khan is the uncle of Aftab Khan.
Rahman was taken into custody in Maine, and all three are being held on immigration charges.