
Following Saturday's postponement of the Copa Libertadores final second leg, security was beefed up the following day around the area Boca Juniors' bus was attacked.

But only a couple of thousand River fans had made it into El Monumental when the match was canceled for a second time on Sunday.

Unlike a day earlier, when River's stadium was packed to the rafters before the initial postponement.

News eventually filtered through the stands, much to the despair of the 66,000 or so fans who had made their way into the ground.

Boca Juniors fans gathered outside the team hotel in support, but some were demanding the resignation of club president Daniel Angelici after he had signed an agreement for the game to go ahead, despite several players being hospitalized.

One of the fiercest rivalries in world sport, violence has often marred clashes between these two South American giants over the years.

There were reports that 29 River Plate fans had been arrested following the violence which saw windows on the Boca team bus smashed with projectiles.

Picture released by Telam showing the Boca Juniors team bus leaving their hotel on the way to the Monumental stadium in Buenos Aires on Saturday before it was attacked.

Pablo Perez of Boca Juniors needed medical treatment in a hospital due to an eye injury caused by fans that stoned the team's bus and threw tear gas to the players on Saturday

As of Monday morning, there is no official date for when the match -- dubbed 'the final to end all finals -- will even begin.