Burnley players were confronted on the pitch by a Blackburn fan as Sean Dyche's side won a fourth consecutive East Lancashire derby to advance into the third round of the Carabao Cup.
The respective current fortunes of the fierce rivals, whose grounds are separated by less than 15 miles, were fully reflected in what played out at Ewood Park.
Jack Cork headed in the opener for Burnley after 27 minutes and Robbie Brady wrapped up a 2-0 win in first-half added time.
There was a huge police presence in and around the stadium, with police lining the streets in the build-up to kick-off, but neither officers nor stewards prevented two home supporters running onto the pitch after Cork's goal.
Blackburn Rovers