Investigators are looking for a second suspect in the failed terror attack in New York City's Times Square.
Police said a money courier helped funnel cash from overseas to finance Faisal Shazhad's attempt to blow up a car in the heart of New York last weekend.
Investigators have the name of the courier who they believe helped pay for the used SUV and other materials used to rig the car.
They are also looking into possible financing of the plot by foreign groups.
"We are directly looking at who did he have contact with while in Pakistan, what did he do, who is supporting him and why," State Department spokesman P.J. Crowley said.
On Thursday, a spokesman for the Pakistan Taliban said the group had nothing to do with the attempted bombing, but added that "such attacks are welcome."
Meanwhile, authorities said Shazhad has admitted to the attempted bombing and is cooperating with the investigation.