Posh have also supplied the police with video evidence of the incident, which involved players and coaching staff from both teams after the final whistle of County's 3-2 win.
A club statement read: "Following the unacceptable incident that developed at the end of the game against Notts County, the football club has launched a full-scale enquiry to allow the facts to be presented.
"The football club does not condone such behaviour and have been happy to supply the FA, the Football League and the police with video evidence to support this stance."
The FA will consult with the match officials before deciding what action to take.
Source: PA
