05/15/2015 11:58 EDT | Updated 05/15/2016 01:12 EDT

Boca's stadium a crime scene after assaults on River players in 2nd leg of Copa Libertadores

BUENOS AIRES, Argentina - Boca Juniors' stadium has become a crime scene after the biggest match in Argentina was stopped when visiting players from River Plate were sprayed by fans with an eye irritant believed to be pepper spray or mace.Buenos Aires public prosecutor Martin Ocampo says La Bombonera Stadium has been closed so investigators can "gather evidence."The Copa Libertadores match between the Argentine rivals was played before about 50,000 fans. River won the first leg 1-0, and Thursday's match was 0-0 when it was suspended before the second half could begin.The suspension and fan attack on rival players is the latest in the endemic violence that threatens almost every soccer match in Argentina.