Buffalo Mayor Byron Brown is responding to a video that surfaced over the weekend that video appears to show a man being held down by Buffalo police officers while being hit in the face.

Buffalo police say it started as a traffic stop after the suspect was allegedly seen driving the wrong way down a one-way street.

Mayor Brown says, "Like others, I am concerned by what I saw on that video, however, I do not have all of the facts regarding this situation. The police commissioner has already opened an internal affairs investigation, and I am directing that this investigation be expedited and made a top priority."

The Erie County District Attorney's Office confirmed it is also investigating, telling Spectrum News: "Yes, our office is investigating the incident. We cannot comment further on an open investigation. "

The Buffalo Police Advisory Board is asking the Common Council to launch its own investigation and recommends the officers involved be removed from patrol during the process. The board is also calling for new policies regarding the use of force. City officials say the officers are not on leave at this time.

The suspect was charged with three criminal counts including the destruction of physical evidence.

It is unclear what led to those charges.