From the NY Times:
Federal authorities are investigating the fund-raising operation of the New York City comptroller, John C. Liu, seeking records from his campaign and from a city contractor whose employees were listed as having contributed thousands of dollars to his campaign, people with knowledge of the matter said.
Grand jury subpoenas issued last week in the inquiry followed a report in The New York Times last month detailing a number of fund-raising improprieties, including questions about the sources of Mr. Liu’s donations, whether people listed as contributors had actually given their own money and whether some donors listed even existed.
It is unclear whether the current inquiry is related to an investigation begun by Manhattan federal prosecutors and the Federal Bureau of Investigation in late 2009. That investigation, which had not previously been made public, focused on whether foreign money flowed into Mr. Liu’s 2009 campaign for comptroller, two people with knowledge of the inquiry said.