It's been reported that the FA has been told about a blue smoke bomb which was thrown onto the pitch during their game against Hereford last night.
It looked as though the smoke bomb was thrown by a King's Lynn supporter but this hasn't been confirmed.
"The main concern of the club is the smoke bomb," said Linnets spokesman Mark Hearle as reported by the Eastern Daily Press.
"We now have to wait to see what action the FA will take against us as a club.”