Another Capitol Hill figure has pleaded guilty in connection with the Jack Abramoff public corruption scandal, the 15th person who has peaded guilty or is awaiting trial in the case.

Trevor L. Blackann, 34, formerly of the District, entered his plea today to making a false statement on his 2003 tax returns by failing to report as income about $4,100 in illegal gifts that he received from lobbyists.

Blackann was a legislative assistant in the House and Senate for Missouri Sen. Christopher S. "Kit" Bond and Rep. Roy Blunt, both Republicans. (UPDATED: Contrary to a D.C. Examiner report, Blackann never worked directly with Abramoff, said his attorney, Carol Elder Bruce of the Washington firm of Bracewell & Giuliani LLP.)

As part of his guilty plea, Blackann admitted to receiving gifts from three lobbyists in 2003, including a free trip to attend the first game of the 2003 World Series.

That trip included airline travel to and from New York City, transportation around the city in a chauffeured sport utility vehicle, a ticket to the game, a souvenir baseball jersey, admission to and entertainment at a gentlemen's club following the game and free meals and drinks, according to court documents.

In recent years, Blackann has worked as a lobbyist for Daily Farmers for America Inc.

Blackann's plea is part of a lengthy, ongoing investigation into the lobbying activities of Jack Abramoff. The 49-year-old Abramoff was sentenced in September to two years in prison for charges in the case. Abramoff, who is cooperating with authorities, is also serving a nearly six-year sentence in federal prison in Cumberland, Md., for fraud in his purchase of a Florida casino cruise line. He is in the second year of that sentence and will likely be in prison until 2012.

Blackann