The Football Association has launched an investigation into the coin-throwing at Wayne Rooney at the weekend with the aim of identifying the culprits.
The FA had a crowd control adviser at the game and is waiting for a report into the incidents. It is also contacting Crystal Place to ask for their observations and speaking to the police in charge of security inside the ground.
Palace are unlikely to be charged unless the investigation decides the club was negligent - the main aim of the probe is to see if any of the people who threw coins or other items at the England striker can be identified from CCTV footage.
Any fan throwing coins faces a potentially lengthy banning order from magistrates.