An FBI translator assigned to investigate a German rapper-turned-terrorist instead traveled to Syria to marry him, according to CNN. Daniela Greene lied to the FBI about her whereabouts and warned her new husband, Denis Cuspert, about the investigation. Cuspert, who rapped under the name Deso Dogg, has been featured in videos for the Islamic State in Iraq and Syria holding severed human heads, CNN reports. According to the report, Greene realized she had made a mistake just weeks after marrying Cuspert. She then fled back to the U.S., where she was arrested and agreed to cooperate with authorities.