The document is a letter from the National Human Rights Commission acknowledging receipt of a complaint filed by Om Prakash. It provides details of the complaint including Om Prakash's contact information, that the incident took place on April 26, 2021 in North East Delhi, and that the complaint alleges abuse of power and criminal acts by several police officials for suppressing an FIR related to the gang rape and illegal sex trade involving Om Prakash's family members.