Two Boca Juniors supporters murder a River Plate fan in aftermath of Libertadores final River vs Boca - Final Libertadores 2018 Exequiel Aaron Neris was stabbed to death

River Plate emerged victorious from the rearranged Copa Libertadores final in Madrid, but two Boca Junior supporters have been accused of murdering one of River's fans in the aftermath of Sunday's fixture.

After celebrating the extra-time victory, Exequiel Aaron Neris, 21, was murdered in the Misiones province.

According to the Clarin newspaper, the 21-year-old was assaulted by two Boca Juniors supporters, before he was fatally stabbed to death in his left leg, with the blade severing the femoral artery.

Despite being treated on the scene, Neris later died in hospital, although was able to speak to his mother before he passed away.

"I'm dying, I'm dying, they attacked me for celebrating the result, because I'm a River fan," he explained to her.

Lucia Ramona Neris was also quoted in the Diario de Misiones, confirming just what had happened to her son.

"They killed my son, he was just walking, he had surgery and three nails in one leg after a motorcycle crash a few months ago," she intimated.

"They attacked him even though he was hardly walking.

"They hurt him like a defenceless dog."