The FBI and prosecutors in North Carolina and Florida began their investigation last spring.

WSJ: Congress to Investigate FBI's Handling of David Petraeus Inquiry

The NYSE launched a high-profile investigation this spring into allegations that specialist firms have been front-running clients, or trading in advance of them to profit from expected price moves.

FORBES: Billion-Dollar Blunders

The OFT, which is working with international counterparts during its enquiries, will report in spring 2013 on whether an investigation is needed into personalised pricing.

BBC: How technology opens the door for personalised pricing

The investigation gained momentum this spring when Mr. Landis sent emails to officials claiming there had been systematic doping on the U.S. Postal Service cycling team when Mr. Armstrong and Mr. Hincapie rode on the squad.

WSJ: Cyclists Armstrong, Hincapie Widen Legal Teams

Malcolm Smith, City Councilman Daniel Halloran, two high-ranking city Republican Party officials and the mayor and deputy mayor of suburban Spring Valley were arrested as part of a federal investigation, watchdog groups insisted that Albany's "pay-to-play" culture must go.

WSJ: Advocates call for reforms after NY scandal

The defense plans to argue that the Federal Bureau of Investigation, which requested the wiretaps beginning in spring 2008, misled the judge who granted them by failing to disclose that its informant had a prior criminal conviction, making that witness unreliable.

FORBES: Galleon Group Lawyers To Argue Court Should Toss Evidence From Wiretaps