Updated

Philadelphia prosecutors have charged a police lieutenant caught on video punching a woman while responding to a disturbance at a Puerto Rican Day parade in September.

Jonathan Josey, who has been fired, was charged Thursday with simple assault, a misdemeanor.

District Attorney Seth Williams says he made the decision after carefully reviewing the video, which went viral on the Internet. Williams says police were responding to a chaotic situation, but the use of force was unnecessary.

Police Commissioner Charles Ramsey says he supports the decision. A message left with Josey's attorney was not immediately returned.

The video shows 39-year-old Aida Guzman being struck in the face and falling to the ground, her face bloodied, and then being led away in handcuffs. A disorderly conduct charge against her was later withdrawn.