WASHINGTON A telephone company cut off an FBI international wiretap after the agency failed to pay its bill on time, according to a U.S. government audit released on Thursday.
The audit by the Justice Department's inspector general faulted the FBI for poor handling of money used in undercover investigations, which it said made the agency vulnerable to theft and mishandled invoices.
It cited the case in which a wiretap under the Foreign Intelligence Surveillance Act, which governs electronic spying in terrorism and intelligence cases, was disrupted due to an overdue bill.
"Late payments have resulted in telecommunications carriers actually disconnecting phone lines established to deliver surveillance results to the FBI, resulting in lost evidence, including an instance where delivery of intercept information required by a ... FISA order was halted due to untimely payment," the audit said.
Inspector general spokeswoman Cynthia Schnedar said she could provide no additional details on the disrupted wiretap.
The FBI acknowledged a "a few instances" in which late phone bills led to surveillance disruptions. It added, "These interruptions were temporary and in our assessment, none of those cases were significantly affected."
The American Civil Liberties Union said the report highlighted hypocrisy from telephone companies that want Congress to give them lawsuit immunity for cooperating in certain wiretaps on the grounds they were only acting as responsible corporate citizens.
Much of the report contained sensitive law-enforcement information and many details were not released.
The FISA program, denounced by critics as overly intrusive and unconstitutional, is up for renewal in Congress.
Lawmakers are bogged down over the scope of the program and liability protections for telephone companies that took part in a domestic eavesdropping program launched by President George W. Bush after the September 11 attacks.
Bush wants Congress to shield phone companies from lawsuits for taking part in the program, saying their cooperation "to defend our nation" in the FISA wiretaps is essential to national security.
American Civil Liberties Union attorney Michael German said, "It seems the telecoms, who are claiming they were just being 'good patriots' when they allowed the government to spy on us without warrants, are more than willing to pull the plug on national security investigations when the government falls behind on its bills."
The audit followed a 2006 case in which an FBI employee pleaded guilty to stealing more than $25,000 in confidential case funds intended for undercover telecoms services.
The FBI acknowledged "widespread agreement" that its 1980s era accounting system was inadequate and said it was working to improve it.
"The FBI will not tolerate financial mismanagement," it said.
(Editing by David Alexander and Peter Cooney)