On May 28th, special agents with the NPS Investigative Services Branch and Immigration and Customs Enforcement, along with protection rangers, served a federal search warrant on a residence located within the park. The warrant was issued following receipt of information by law enforcement indicating that resident Gary Hancock, a concession employee, had paid to download child pornography to his computer. The search warrant resulted in the discovery of downloaded movies depicting prepubescent boys and girls engaged in sexual activity. Hancock was subsequently arrested and charged with two counts of possessing child pornography obtained from interstate or international commerce.