A US federal grand jury has issued a subpoena to Daniel Richman, a longtime friend and adviser to former FBI Director James Comey, as part of a renewed Justice Department investigation into whether Comey leaked classified information to the media. The move signals that prosecutors have reopened a probe first pursued during Donald Trump's first term, which stalled after Joe Biden took office, and adds a fresh legal front against Comey beyond the existing case concerning his alleged threats against Trump.

The subpoena, issued on Monday, points specifically to a leak of classified material to the New York Times. Fox News reported the development citing sources, noting it is a developing story with further details expected. The renewed investigation runs alongside a separate probe into Comey over alleged threats against Trump, meaning he now faces scrutiny on two fronts.