The spokesman went on to point out that a decision on any action against them would lie with the Premier League.
"Further to reports in the media, the FA would like to clarify that they are not investigating any matters concerning the postponement of the Premier League game involving Middlesbrough and Newcastle," said FA spokesman Adrian Bevington.
"This fixture does not fall within the jurisdiction of the FA's control."
Surely if the Premier League are investigating a match which allegedly should not have been played (Chelsea v Charlton), then an investigation into a match which should have been played would make sense.