An England fan is in a serious condition in hospital after falling from the stands at Wembley during Sunday's Euro 2020 game against Croatia, officials have said.
"We can confirm that a spectator fell from the stands just after kick-off in the match between England and Croatia at Wembley Stadium," a spokesperson for the ground said in a statement.
"The spectator was given on-site medical attention and was then taken to hospital in a serious condition.
"We will continue to work with UEFA to ensure the matter is fully investigated and we are continuing to monitor the situation."
There were 22,500 fans in the stadium, in accordance with the government's lockdown roadmap.
England won their opening European Championships game - for the first time ever - after Raheem Sterling scored in the second half.
Officials say he is now awake and in a stable condition in a Copenhagen hospital.
Denmark team doctor Morten Boesen said at a news conference that the 29-year-old was "gone" before medics began resituating him on the pitch on Saturday.
"How close were we? I don't know. We got him back after one defib, so that's quite fast," he said.
"We don't have any explanation why it happened. The details about what happened I am not quite sure of because I am not a cardiologist, I will leave that to the experts. I didn't see it live, only on screens afterwards."
Team captain Simon Kjaer was hailed a hero as the first to rush to Eriksen's aid after he collapsed with no other players around him.
Eriksen, who had no history of heart problems, could be left unable to play professional football again, experts have suggested.
There were cheers ahead of England's match against Croatia as announcers wished Eriksen well.
A big screen displayed the message "Best wishes Christian" as applause broke out in the stands.