Lower Elements Police Recon (LEPR) is a fictional law enforcement agency in the Artemis Fowl series by Eoin Colfer. It operates in the underground world of fairies and magical creatures, focusing on maintaining order and enforcing laws among the various species. LEPR is known for its advanced technology and unique methods, often employing magical tools to assist in investigations. The agency is tasked with handling crimes that involve both magical beings and humans, ensuring that the delicate balance between the two worlds is preserved.