A federal grand jury in Maryland is examining whether the Justice Department‘s mortgage-fraud investigation involving Sen. Adam Schiff (D-CA) was properly handled by Trump administration officials, according to a source who spoke about her interview with prosecutors.

The seemingly unusual review has drawn in witness Christine Bish, a California Republican congressional candidate who assembled a more than 100-page packet of research alleging irregularities in Schiff’s home-loan records, she revealed in a phone interview with the Washington Examiner.