The FBI has targeted a defense attorney for leaking confidential grand jury information linking Barry Bonds and other world-class athletes to alleged steroid use, Yahoo! Sports has learned. The defense attorney, Troy Ellerman, has been the subject of an FBI investigation, according to Larry McCormack, a former private investigator who worked on the BALCO federal steroids case and who said he was a co-tenant in an office with Ellerman in Sacramento, Calif., where they worked together on cases, at the time of the alleged leaks. Other sources have said they were interviewed by the FBI.