PNE v Blackpool pitch invasion: More arrests 'inevitable'
More arrests over "pockets of disorder" at Preston North End's League Cup win over Blackpool are "inevitable", police have said.
About 200 Preston fans ran on the pitch and the ground was damaged after the game on Monday.
Lancashire Police have been examining CCTV from the ground and the city centre to identify those responsible.
Det Insp Paddy O'Neill said it was "entirely regrettable [people] chose to act in this mindless fashion".
Six arrests have been made and two people have been charged, one with using threatening words or behaviour to cause harassment, alarm or distress, and the other with criminal damage.
A police spokeswoman said there had been "a number of incidents during the day that culminated in supporters invading the pitch following the game".
Mr O'Neill said the behaviour of those involved was "completely unacceptable".
He said: "There is now a major investigation under way to identify those responsible and to put them before the courts.
"Disorder [is] illegal and it frightens people; my message to those people is that your arrest is inevitable."
The Football Association has also launched an investigation into the incident.