About 25 unreleased songs by the rapper were discovered online, and investigators traced sales of the music to a former employee, according to federal prosecutors.

In January, over 25 unreleased Eminem songs were mysteriously leaked online. On Wednesday (March 19), a 46-year-old former Eminem employee named Joseph Strange was charged by the FBI with criminal copyright infringement and interstate transportation of stolen goods.

"The significant damage caused by a trusted employee to Eminem's artistic legacy and creative integrity cannot be overstated," a spokesman said.