A masked fan ran on the pitch and attacked a player, forcing a Swedish top-tier league match to be abandoned.
Ostersunds goalkeeper Aly Keita was struck by a fan in the 90th minute of a game away to Jonkopings Sodra on Monday evening.
Footage from the match showed Keita running from his penalty area when he sees a fan pursuing him, then lying on the pitch about 30 meters from his goal after being struck. Keita was treated for a slight head injury.
Police arrested a 17-year-old man from Sodertalje, near Stockholm, the Swedish football federation said in a statement.
Sweden’s top referee, Jonas Eriksson, took the teams off the pitch and later abandoned the match.
The federation said it could award a 3-0 win to Ostersunds by default.
Earlier this season, a fireworks incident led to a 3-0 loss being awarded against IFK Goteborg when a home league match was stopped.
A firecracker thrown from the crowd exploded next to Malmo midfielder Tobias Sana, a former Goteborg player, as he warmed up on the sidelines. The game had been level at 0-0 in the 77th minute.
That match was abandoned, also by referee Eriksson, after a linesman who was also near the exploding firework was shocked by the incident.