Tuesday’s League Two match between Crawley Town and Stevenage had to be postponed due to a coronavirus outbreak at Crawley.
The Reds were unable to fulfil the fixture because of positive tests and the need for others to self-isolate.
The reason for the postponement will now be investigated in accordance with English Football League regulations.
A new date for the match including Saturday’s FA Cup fourth-round tie against Bournemouth, will be made in due course.