The investigation into the failed bombing in New York’s Times Square two weeks ago has yielded three more arrests in the US.
Two men, reportedly of Pakistani origin, were detained during police and FBI raids near Boston.
A third man was taken into custody in Maine.
The FBI also searched private premises in New York and New Jersey, although no arrests were made there.
The US Attorney General said the detained men may have provided funds to the man accused of planting the bomb. Eric Holder added:
“These searches are the product of evidence that has been gathered in the investigation since the attempted Times Square bombing and do not relate to any immediate threat to the public or active plot against the United States.”
The car bomb was defused in Times Square on May 1 after a street vendor alerted police of smoke coming from the vehicle.
Two days later police arrested Pakistani-born US resident Faisal Shahzad as he was on a plane bound for Dubai.
Investigators say he has confessed to planting the device as well as having received bomb-making training in Pakistan.