A man claiming to be an FBI agent showed up at a Brooklyn jail with a barbecue fork and pizza cutter and tried to free Luigi Mangione on Wednesday night, according to a law enforcement official and a federal criminal complaint. When jail staff asked Anderson to provide his credentials, prosecutors said, he gave them a Minnesota driver’s license. Anderson was arrested at the Metropolitan Detention Center and faces a federal charge of impersonating an FBI agent. In Brooklyn federal court on Thursday, defense attorney Michael Weil asked Magistrate Judge Taryn Merkl to release Anderson to a hospital for an evaluation instead of holding him in jail. At the end of the appearance, Anderson asked the judge to seal the body camera footage from his arrest for “political” reasons.