The Oakland County Child Killer (OCCK) is the name given to the perpetrator(s) responsible for the serial killings of at least four children in Oakland County, Michigan, United States, between 1976 and 1977. The victims were held captive before being killed, and forensic DNA testing has indirectly implicated two suspects, one of whom has since died, with the other serving life in prison for offenses against children. A DNA profile created from samples taken from some of the victims' bodies is from the main perpetrator, but does not match the DNA of anyone named in connection with the case; the perpetrator's identity is unknown.