A story in the Washington Post says the federal investigation into a land deal led by Jane Sanders, the wife and political adviser of Sen. Bernie Sanders, has accelerated.

Prosecutors have reportedly hauled off with more than a dozen boxes of records from the Vermont college she once ran and calling a state official to testify before a grand jury.

The investigation centers on the 2010 land purchase that relocated Burlington College to a new campus on more than 32 acres along Lake Champlain.

While lining up a multi-million dollar loan, Sanders told college trustees and lenders that the college had commitments for millions of dollars in donations that could be used to repay the loan, according to former trustees and state officials.

Bernie Sanders has called this a "politically partisan witch hunt," designed to damage his and his wife's name.