The statute of Der Spiegel says that every fact in the magazine must be correct: müssen unbedingt zutreffen. Its documentation department, with more than 80 staff, is considered the largest of any news magazine in the world. On 19 December 2018 Der Spiegel made public that Claas Relotius, one of its most prominent writers, had invented large parts of his reports. His colleague Juan Moreno had noticed contradictions, checked the facts and reported his suspicion to the heads of the section. They reacted with skepticism. Der Spiegel called the case a low point in its 70-year history, and a commission examined why its checking systems had failed.