Mark Sampson has been sacked as England Women’s head coach due to "clear evidence of inappropriate and unacceptable behaviour" during his time at Bristol Academy.
Sampson managed Bristol prior to taking charge of the national team in December 2013.
The FA says in 2014 safeguarding allegations were made against him about his time managing the West Country club.
The safeguarding assessment at the time was that he "did not pose a risk working in the game".
The FA says the full report of the 2014 investigation was only brought to the attention of the current leadership last week and the governing body says it revealed "clear evidence of inappropriate and unacceptable behaviour by a coach".
Bristol Academy says it has had "no further contact from the FA on this subject" since 2014.
In 2014 the club was made aware of the FA’s investigation into allegations surrounding Mark Sampson. Bristol Academy Women cooperated fully with that investigation, which found that Mark Sampson did not pose a safeguarding risk working in the game. The club has had no further contact from the FA on this subject in the intervening years.
FA CEO Martin Glenn says the evidence made it "impossible" for Sampson to continue in his position.
An investigation is already under way into allegations made by England Ladies striker Eniola Aluko about Sampson last year.
The FA says it stands by the findings of the investigation.
Sampson has denied all accusations put to him about the incident and no evidence of wrong-doing was found.
Sampson has yet to comment since his contract was terminated.