BOSTON —

Two cousins were arraigned Thursday for their alleged involvement in a violent altercation with Boston police officers outside of a Fenway concert venue

Edwin Rivera, 30, of Mashpee, was charged with assault and battery on a police officer, assault and battery with a dangerous weapon, assault and battery attempt to disarm a police officer, resisting arrest, witness intimidation, disturbing the peace, and disorderly conduct.

Steven Costa, 27, of Hyannis, was charged with interfering with a police officer, assault and battery, attempt to disarm a police officer, assault, resisting arrest, witness intimidation, disturbing the peace, and disorderly conduct.

Both men were arraigned in Roxbury, Boston Municipal Court. Rivera was released on personal recognizance and is due back in

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