Confessed Times Square bomber Faisal Shahzad appears to have financed his failed plot with a wad of $100 bills, but the amount of money needed to execute the scheme was fairly modest.
There were plane tickets to and from Pakistan, living expenses, $1,300 for a used SUV, $95 worth of firecrackers and other small amounts for tanks of gasoline and propane.
The total could add up to as little as $7,000.
Shahzad's finances are under scrutiny as authorities try to learn whether he got cash from an overseas group.
A law enforcement official has told The Associated Press that investigators have identified -- and are looking for -- a person who helped courier money to Shahzad from overseas. The official spoke on condition of anonymity because of the sensitivity of the investigation.