The FBI raided the Virginia house of Rep. John Doolittle last Friday, law enforcement sources familiar with the investigation told FOX News on Wednesday.

Doolittle, R-Calif., has been under investigation in connection with former lobbyist Jack Abramoff, who was at the center of wide-reaching pay-to-play schemes involving Washington lobbyists, government officials and shadow organizations designed to bilk clients of money and hide the exchange of money and favors between clients and officials.

The raid was first reported by the Capitol Hill newspaper Roll Call.

Doolittle accepted campaign money from Abramoff and did not initially report the use of a luxury sports box paid for by the lobbyist. The company run by Doolittle's wife, Julie Doolittle, also received nearly $67,000 from Abramoff's lobbying firm for event-planning work, including a March 2003 fundraiser at the Spy Museum in Washington, D.C. The event never happened because of the launch of the war in Iraq..

The search last Friday focused on records of Doolittle's wife's company, Sierra Dominion Financial Solutions Inc., said attorney David Barger. Julie Doolittle, was on retainer for Abramoff from 2002-2004 for her work.

"The congressman fully supports his wife in this matter and we're optimistic that truth will win out in the end," Barger said. He refused further comment.

Doolittle, who has served in the House since 1991, also issued a statement backing his wife's actions.

"My wife has been cooperating with the FBI and the Justice Department for almost three years and that cooperation is going to continue in the future. I support my wife 100 percent and fully expect that the truth will prevail," he said.

Kevin Ring, a former aide to Doolittle, resigned last week from the firm where he was working, Barnes & Thornburg LLP. Ring worked in the Washington office of the Indianapolis-based company. Ring also had ties to Abramoff, and discussed with him the possibility of hiring Doolittle at a nonprofit accused of doing favors for Abramoff in exchange for cash. That 2000 exchange was disclosed in an e-mail released by Senate investigators last year, but the job in question didn't come about.

Abramoff reported to prison in November as part of a separate fraud case involving a casino boat company in Florida. Abramoff was sentenced to 70 months in prison, but his lawyers are seeking to reduce it because of his assistance in the lobbying investigation.

A number of officials have been convicted as part of the investigation, including former Rep. Bob Ney, R-Ohio. Ney began serving a 2 1/2-year prison sentence on corruption charges in March.

FOX News' Jim Mills and The Associated Press contributed to this report.