Oklahoma Service of Petition and Brief in Support on District Attorney and Attorney General is a process used by litigants to provide notice of a lawsuit to the appropriate District Attorney and Attorney General. This service is typically used when a party is bringing a civil action or appeal against a state agency or official. The service involves filing a petition and brief in support of the claim with the District Attorney or Attorney General, who then has the responsibility to provide notice to the defendant. Depending on the case, the service may also be required to be served on the defendant directly. There are three types of Oklahoma Service of Petition and Brief in Support on District Attorney and Attorney General: personal service, certified mail service, and publication service. Personal service requires that the petition and brief be delivered to the District Attorney or Attorney General by a court process server. Certified mail service requires that the petition and brief be sent via certified mail to the District Attorney or Attorney General. Publication service requires that the petition and brief be published in a newspaper of general circulation in the county where the District Attorney or Attorney General is located.