It was at the end of the first half that Christian Eriksen, completely without contact, collapsed and lay on the grass.
Paramedics were called in and cardiopulmonary resuscitation was started.
The majority of the Danish players stood in a semicircle in front to obscure Eriksen and the medical staff.
After just over 15 minutes, Eriksen was carried out on a stretcher.
At present, his condition is unclear.
The match is canceled.