CRYSTAL Palace boss has called the club's coin-throwing incidents against Newcastle United and Liverpool as "stupid".
Eagles officials are working with Scotland Yard's public order unit to find the perpetrators, and the club have since installed HD CCTV throughout Selhurst Park.
Pardew says Palace have the best atmosphere and believes that reputation could be soured if it happens again.
The boss has also called on Eagles fans to report it via social media and the cameras if they see someone committing the act again.
"It's a big concern for the football club as you don't want it," said Pardew.
"For me, the manager, I just want to try and prepare the team, I hope it stops because it's something we want to try and take out of the game.
"We've had two incidents and we need to stamp it down. That's what the officials at this football club will try and do.
"I think the first time a coin is thrown is maybe a heat of the moment thing to do. To do it twice is stupid.
"We can't accept that at any level. The incident with Chelsea (fans) in Paris gives you the strength of social media, so if any fan is standing next to someone, film them.
"Let's have a picture of them and we'll do our best to film them.
"We have all types of societies here. We can't control their behaviour to a degree – all we can do is put on an environment to make it as friendly as possible we can.
"We have the best atmosphere in the country and we don't want to lose that by silly little incidents."
By Mark Ritson (Twitter @MR_LWMedia)
