WASHINGTON – Federal agents have searched the home and office of the CIA’s departing No. 3 official in a corruption investigation that has sent a former congressman to prison and now involves CIA contracts.

Investigators from five federal agencies used search warrants to go through the home of Kyle “Dusty” Foggo and his office at the CIA’s campus, both in Washington’s Virginia suburbs FBI spokeswoman Debra Weierman said.

The warrants were sealed, and officials would not discuss what agents were seeking.

Foggo agreed to step down as the CIA’s executive officer under pressure because federal authorities are investigating whether he improperly awarded contracts to California businessman and friend Brent Wilkes, according to federal law enforcement and intelligence officials. They spoke on condition of anonymity because investigations were under way.

Prosecutors have implicated Wilkes in a scheme to bribe former Rep. Randy “Duke” Cunningham of California, but he has not been charged. Wilkes’ lawyer has said Wilkes did nothing wrong.

Among the contracts under scrutiny is one that dates from Foggo’s previous job of running the logistics at a secret facility in Europe that supplies CIA personnel in war zones, the law enforcement official said. Foggo gave a Wilkes-related company a multimillion-dollar contract to supply bottled water, the official said.

Foggo, who was in the process of clearing out his office at the end of a 25-year CIA career, has denied wrongdoing. “Mr. Foggo maintains that government contracts for which he was responsible were properly awarded and administered,” the CIA said in a statement last week.

CIA spokeswoman Jennifer Millerwise Dyck said Friday that top CIA officials were informed of the warrants shortly before the searches began. “The agency is cooperating fully with the Department of Justice and the FBI,” she said.

Agencies taking part in the searches are: the FBI; the Internal Revenue Service, which administers federal tax laws; the Defense Criminal Investigative Service; the U.S. Attorney’s office in San Diego, California: and the CIA’s own inspector general, Weierman said.

The inspector general has been investigating Foggo’s relationship with Wilkes for more than two months.

The inquiry stems from the investigation of Cunningham, who is serving a prison term of more than eight years after admitting last year that he took $2.4 million (now worth 1.9 million) in bribes from government contractors. Mitchell Wade, another contractor, pleaded guilty in February to conspiring with Cunningham and is cooperating with investigators.

Wilkes is described in court papers as an unindicted co-conspirator.

The investigation includes allegations, raised by Wade, that Wilkes provided Cunningham prostitutes, limousines and hotel suites.

Foggo has acknowledged participating in poker games organized by Wilkes at the hotel rooms, but he has said nothing untoward went on while he was there. “If he attended occasional card games with friends over the years, Mr. Foggo insists they were that and nothing more,” the CIA statement said.

Lawyers for Wilkes and the limousine company, Shirlington Limousine and Transportation Inc., also in suburban Virginia, have denied any involvement with prostitutes.

Foggo announced his retirement from the agency this week, three days after CIA Director Porter Goss said he was stepping down.

Dyck said the Foggo investigation has “absolutely nothing, zero” to do with Goss’ resignation.

Foggo’s associates have said he received the Intelligence Commendation Medal in 2002 for supporting President George W. Bush’s campaign against terror. Before becoming the agency’s No. 3 leader in 2004, he was the chief of base at a secret facility supporting the campaign.

As executive director, Foggo had the powerful position of overseeing day-to-day operations of the CIA.

One FBI agent told reporters from Copley News Service, who were at Foggo’s residence, that Foggo was not at home in his quiet suburban neighborhood near CIA headquarters and had not been detained. The agents refused to answer other questions about the raid.

A neighbor told Copley that the agents arrived about 8 a.m. Friday morning.