A conservative-leaning watchdog group sued the FBI Friday after the law enforcement agency ignored a Freedom of Information Act request for records related to the Hillary Clinton email investigation.

Judicial Watch filed a FOIA on July 7 for documents that included "all records related to the meeting between Attorney General Lynch and former President Bill Clinton on June 27, 2016."

Bill Clinton and Lynch met privately on a Phoenix tarmac in the final days of the email probe after they said their jets unexpectedly landed near each other.

While both parties claimed the meeting was purely social in nature, their visit sparked a fierce backlash among critics who accused Bill Clinton of attempting to tilt the outcome of the investigation in favor of his wife.

Judicial Watch's open records request also sought correspondence between FBI agents and the Democratic National Committee, the White House and Hillary Clinton's campaign, if any exist.

The FBI has to date released hundreds of pages of 302s, or official summaries of interviews with witnesses, in response to separate FOIA requests.