Bucharest police have questioned 17 football fans after clashes at the World Cup qualifier between Romania and Poland on Friday.
Police said 12 Poles and five Romanians were taken for questioning, with 12 fined for the clashes.
The nationalities of the 12 fined were not disclosed.
Alis Grasu, a spokeswoman for the ambulance service, said a Pole with stomach pains and a Romanian with a heart condition were hospitalized. Neither condition was life-threatening.
Police fired tear gas before the Group E match, with fans throwing flares on the pitch during the game.
Poland’s star striker Robert Lewandowski needed medical attention as he collapsed after a flare thrown in the 55th minute. The referee temporarily stopped the match and Lewandowski returned to the game several minutes later. He scored twice in Poland’s 3-0 win against Romania.