Two Boca Juniors supporters have reportedly been killed in a shootout between two gangs of rival fans.
The incident is said to have occurred ahead of a pre-season friendly outside of San Lorenzo's stadium, forcing the match to be abandoned.
Witnesses are believed to have claimed that about 100 shots were fired during the fight, causing the death of two men, according to the Daily Mail.
The names of the two men are yet to be released.
