A former Austin police commander who was fired for misconduct in 2018 is suing the city and the police chief, alleging that he was actually fired for whistleblowing. Former Assistant Chief Jason Dusterhoft’s federal lawsuit, filed Wednesday, argues that he would not have been fired if he hadn’t brought up several issues within the Austin Police Department, including concerns with the DNA lab and allegations that top police officials had lied to Internal Affairs investigations. An independent investigator found earlier this year that some of the issues Dusterhoft raised were investigated. Dusterhoft was fired because officials said that, in 2018, he choked a woman into unconsciousness during sex.