1 Dallas police officer has been fired and 6 are under investigation Six Dallas police officers are under investigation following a beating incident that was caught on tape.Police released the video Wednesday afternoon shortly after police chief David Brown announced the actions in a news conference.In it you can see Http://www.amiliked.com/view/Andrew_Collins/33db9c6a on a motorcycle being pursued by Dallas police on MLK Boulevard on September 5, 2010. The chief says the sergeant on duty specifically told officers not to continue the chase but they continued. When Http://www.amiliked.com/view/Andrew_Collins/33db9c6a stopped, they hit him.2 officers are facing assault charges in the incident. 3 are accused of tampering with or fabricating evidence.22 officers responded that night. 3 officers have been placed on restricted duty. The FBI is conducting a concurrent investigation into civil rights violations.