Boca and River drew the first leg 2-2 on November 11.
Unsurprisingly, it soon became clear that the final would not be going ahead on time on Saturday night.
However, it was later confirmed the game had been suspended until 5pm local time (8pm United Kingdom time) on Sunday.
Tevez was one that suffered in the attack with tear gas also set off.
Tournament organisers Conmebol, the South American football governing body, said the match at River's Monumental stadium between the local arch rivals would kick-off at 7.15pm (2215 GMT), more than two hours after its scheduled start time.
Local media reported some players were exposed to tear gas after police clashed with the River fans who were throwing stones and missiles at the Boca bus.
Further reports suggest that the driver of the Boca Juniors bus almost collapsed upon arriving at the Monumental due to the effect of the gases, while some of the players were said to be vomiting, with Tévez, Wanchope y Espìnoza among the worst affected.
Copa Libertadores final hit by pre-match violence
Kickoff was initially delayed for an hour; then for another 20 minutes; then another 55.
A number of players, including Boca's former Manchester City striker Carlos Tevez, were reportedly suffering from dizziness and vomiting and being treated by club doctors.
Coates claims the game could still be played in midweek, behind closed doors - despite the huge interest the tie generates around the world.
Before the match was called off, Tevez said CONMEBOL was forcing Boca to play the match even though teammates were injured after the bus attack.
Three Boca players sustained injuries, the worst suffered by the midfielder Pablo Perez who was taken to hospital with an eye problem, but Conmebol's medical team later released a statement insisting no Boca players had suffered injuries bad enough to stop them playing-which didn't really seem the point.
Dominguez met with club directors and FIFA President Gianni Infantino. The presidents of Boca and River are meeting in the Monumental to decide what how to proceed. Argentina has a deep problem of fan violence - hence the ban on away supporters from this final - and, seemingly, a lack of political will to get to grips with it.
The two sides are locked at 2-2 from the first leg two weeks ago, which was delayed for 24 hours due to the weather. Had River won, Boca would surely have appealed against the result and in the circumstances, it would have been hard for anybody to concentrate on the actual game.
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