Metro said Friday it has hired the law firm of Cadwalader Wickersham & Taft to look into a real estate deal on Florida Avenue NW.

There had been concerns raised about the contract and D.C. Council member Jim Graham’s involvement in the deal.

Metro’s board of directors had said in February that it would seek an independent review of the handling of the land deal.

In an e-mailed statement Friday, Metro said the board’s audits and investigations committee has retained the firm and that they expect the investigation to last several months.

Graham is alleged to have pressured one of the bidders out of doing a deal for the Metro-owned property, according to The Washington Post’s editorial board.

Metro later sold the land to JBG Associates, and the firm plans to do a retail and residential project.

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