The Championship fixture featuring Barnsley and Peterborough was subject to late change of match official following an arrest into a hacking probe at the Football Association.
Mohareb currently holds the senior position of National Referee Development Manager at the Football Association.
A spokesman for the police confirmed the arrest to the BBC in a statement, which read: "On Sunday 30 September police seized a number of electrical items as part of an investigation into computer hacking and the dissemination of private information.
"A 29-year-old man was arrested on suspicion of unauthorised access to computer material/data, under section 1 of the misuse of computers act 1990. The man has since been bailed until 26 November."
The FA have refused to comment on Mohareb's arrest or his future at this stage.