A female FBI agent named Daniela Greene, who had a top-secret security clearance in 2014, married a German rapper-turned-ISIS-supporter she was supposed to be investigating. Shortly after marrying Denis Cuspert, Greene regretted her decision. She returned to the U.S. and was arrested and eventually sentenced to two-years in prison. From CNN:

In Germany, Cuspert went by the rap name Deso Dogg. In Syria, he was known as Abu Talha al-Almani. He praised Osama bin Laden in a song, threatened former President Barack Obama with a throat-cutting gesture and appeared in propaganda videos, including one in which he was holding a freshly severed human head… Greene was assigned to the bureau’s Detroit office in January 2014 when she was put to work “in an investigative capacity” on the case of a German terrorist referred to in court records only as “Individual A.”

Individual A was Cuspert who had left Germany for Syria in 2012. In April 2014, just a few months after Greene was assigned the investigation, Cuspert released a video in which he pledged allegiance to ISIS. Two months later, Greene lied to the FBI in order to go meet Cuspert:

On June 11, 2014, Greene filled out a Report of Foreign Travel form — a document FBI employees and contractors with national security clearances are required to complete when traveling abroad. Greene, who was still married to her American husband at the time, characterized her travel on the form as “Vacation/Personal,” court records show. “Want to see my family,” she wrote. Specifically, Greene said, she was going to see her parents in Munich, Germany.

In reality, she traveled to Turkey and then got help from Cuspert to cross into Syria. Once there she married the terrorist and warned him he was under investigation by the FBI.

Emails Greene sent while in Syria suggest she quickly realized she had made a terrible mistake. “I really made a mess of things this time,” she wrote to an unidentified friend in the U.S. In another email she seemed resigned to her own death, “I am in a very harsh environment and I don’t know how long I will last here, but it doesn’t matter, it’s all a little too late.” About a month after crossing into Syria, Greene fled the country and returned to the U.S. where she was promptly arrested and sentenced to two years in prison.

Greene was released from prison last August. CNN notes that her sentence seems comparatively light given that some people convicted of trying to join ISIS have received sentences closer to 13 years. Greene now works as a hostess at a hotel lounge. She refused to talk to CNN saying it would put her family in danger.