It looks like this Alaska police officer was a cop under a stolen identity. He was an illegal immigrant. To me, that makes every one of his arrests null and void and all that he arrested should go free immediately as he was no more a cop than I am. And non-cops, particularly non-citizens, i.e. illegal immigrants, can't arrest and charge people with crimes.
Officials: Illegal Immigrant Became a Cop in Alaska - FoxNews.com