Okla. Stat. tit. 63, § 63-2-423: Liability for civil damages

A. A person who knowingly participates in the illegal drug

market within this state is liable for civil damages as provided in

the Drug Dealer Liability Act. A person may recover damages under

this act for injury resulting from use of an illegal drug by that

person.

B. A law enforcement officer or agency, the state, or a person

acting at the direction of a law enforcement officer or agency of

the state is not liable for participating in the illegal drug

market, if the participation is in furtherance of an official

investigation.