The FA on Sunday condemned the ticketless fans who stormed into Wembley as "an embarrassment to the England team."
After hours of celebration on Wembley Way, footage emerged of fans breaking down security gates and rushing past guards to gain access to the stadium.
Fighting was then reported on the concourses while fans who had paid for tickets found their seats occupied as supporters filled stairways and exits.
The Met Police later confirmed after the match that 45 arrests had been made.
In a fierce message to those supporters, the FA deemed the behaviour as "entirely unacceptable" and will work to identify those guilty.
#UPDATE | We have made 45 arrests while policing today's #Euro2020 final.
— Metropolitan Police Events (@MetPoliceEvents) July 11, 2021
A number of officers remain on duty, helping fans leaving #Wembley or central London. We are there to look out for your safety.
A statement read: "We strongly condemn the behaviour of a group of people that forced their way into Wembley Stadium before the EURO 2020 Final. This is entirely unacceptable.
"These people are an embarrassment to the England team and to all of the true fans who wanted to enjoy one of the most important matches in our history.
"We will work with the relevant authorities to take action against anyone who is identified to have illegally forced their way into the stadium."
