Story highlights Virginia Gov. Terry McAuliffe is the subject of a federal investigation contributions 
 
 MacAuliffe has not been contacted by authorities, but a spokesman said he will fully cooperate if he is 
 
 Washington (CNN) Virginia Democratic Gov. Terry McAuliffe is the subject of an ongoing investigation by the FBI and prosecutors from the Justice Department's public integrity unit, U.S. officials briefed on the probe say. 
 
 The investigation dates to at least last year and has focused, at least in part, on whether donations to his gubernatorial campaign violated the law, the officials said. 
 
 McAuliffe wasn't notified by investigators that he is a target of the probe, according to the officials. 
 
 "The Governor will certainly cooperate with the government if he is contacted about it," said Marc Elias, attorney for McAuliffe campaign, in a statement to CNN. 
 
 As part of the probe, the officials said, investigators have scrutinized McAuliffe's time as a board member of the Clinton Global Initiative, a vehicle of the charitable foundation set up by former President Bill Clinton. 
 
 JUST WATCHED McAuliffe, after winning the governor's mansion in 2013 Replay More Videos ... MUST WATCH McAuliffe, after winning the governor's mansion in 2013 03:37 
 
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– Not only are the FBI and Justice Dept. investigating Virginia Gov. Terry McAuliffe—they've been doing so for at least a year without him knowing, CNN reports. The investigation is at least partly trying to determine whether the Democrat received illegal donations during his 2013 gubernatorial campaign, officials say. The donations in question include $120,000 from Chinese businessman Wang Wenliang, a former delegate to China's National People's Congress who gave to McAuliffe's campaign through a US business. A Wang spokeswoman says he's a US permanent resident, which would make his contributions legal. "Neither the Governor nor his former campaign has knowledge of this matter, but as reported, contributions to the campaign from Mr. Wang were completely lawful," says McAuliffe-campaign attorney Marc Elias. Wang has also donated $2 million to the Clinton Global Initiative, where McAuliffe was a board member (the initiative is part of a charitable foundation established by Bill Clinton). In fact McAuliffe and Hillary Clinton are close friends, the Richmond Times-Dispatch reports—so close that Politico says there's been talk of McAuliffe as her VP pick. The federal investigation into McAuliffe comes just a year after Virginia's previous governor, Bob McDonnell, was imprisoned on corruption charges.