The Football Federation has warned that pitch invaders have 'crossed the line' and that more security measures ought to be taken in the future.

A Birmingham fan invaded the pitch at St Andrew's and hit Aston Villa's captain Jack Grealish on the head from the back. Chris Smalling was pushed by another invader at Emirates as Manchester United took on Arsenal. The FA has now admitted that they have written to Arsenal and Birmingham to seek opinions on how the same can be addressed. 

"This weekend a line has been crossed in terms of fan behaviour. On Sunday we saw two separate incidents, at Birmingham City and Arsenal, of individuals entering the field of play and assaulting players. Not only is it an offence to enter the pitch, which could result in a club ban and criminal charges for the individual, but it also puts the safety of the players at risk. This is entirely unacceptable and we strongly condemn both incidents. We will be working with the clubs, the leagues and the police to discuss what collectively needs to be done to protect players and officials on the pitch. In addition, we have written to both Birmingham City and Arsenal to seek their observations and examine the security measures they had in place." FA's statement read.

Paul Mitchell pleaded guilty of attacking Grealish and has been sentenced to 14 weeks in jail.

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