Updated

The New York Police Department made a fourth arrest Sunday in a manhunt after an assault on two officers during a protest over the chokehold death of Eric Garner.

Cindy Gorn, 29, was arrested on charges of riot, resisting arrest and obstructing a governmental administration.

Another suspect, Zachary Campbell, was arrested Saturday also on charges of riot and resisting arrest. The 32-year-old was in custody, and it wasn't clear if he had a lawyer.

Police earlier arrested a 36-year-old woman and another man in connection with the attack. Seven people were seen on amateur video pushing, kicking and punching two officers on the Brooklyn Bridge. Others are still being sought.

It happened at the end of a massive march last week protesting a grand jury decision not to indict a police officer in Garner's death.

The Associated Press contributed to this report.