A 15-year-old soccer player has been hospitalized with life-threatening brain injuries after being struck by an opposing player in a post-match fight during an international youth tournament in Germany.

A 16-year-old from a French team was jailed pending further investigation by a judge in Frankfurt, where the match against a team from Berlin took place on Sunday.

In a statement Tuesday, Frankfurt police said a scuffle broke out between players after the final whistle and escalated into punches being thrown.

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The victim was struck in the head or neck area and collapsed, police said. He was treated by emergency medical personnel at the scene and taken to a hospital.

Police are asking witnesses who may have video of the incident to get in touch.