Newcastle keeper Shay Given was confronted by two home fans during the game, while Joey Barton was pelted with missiles before the match.
Police are also investigating the trouble after they arrested 29 fans, many of which were for the pitch invasions.
The violence led to a police officer suffering a broken wrist separating rival fans while a police horse was injured after being hit by a firework.
"– Sunderland do themselves proud again (BBC)

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