Alan Pardew (on BBC Radio 5 Live after his team's 2-0 win): "It was unfortunate because what seemed to be a jovial kind of chant went up about if Sammy scored, and he did.
"From that there was a pitch invasion. Of course you don't want it but it seemed in good heart.
"Somewhere along the line it got lost and there were a couple of nasty incidents on the pitch.
"Unfortunately for us, a few have spoiled it for the 6,000-odd we had here.
"The majority were excellent. It's a shame.
"We've tarnished the game where we've performed very well.
"It was just supporters coming to support their team.
"They were in good voice, too. I think a few younger members of our fan group just lost their heads a little bit over something, I don't know.
"It was difficult to assess from where I was standing - I was on the other side of the pitch.
"I just thought 'we want to get the players off'. Usually that gets the fans off if there's nothing to react to. I went over there myself to try to plead with them to stay off.
"It was just the minority.
"We can't disguise that that period in the game has put a bad reflection on what was, on the pitch, a good night."