Okla. Stat. tit. 12, § 12-2410: Pleas and plea discussions - Admissibility of evidence

A. Except as otherwise provided in this section evidence of the

following is not, in any civil or criminal proceeding, admissible

against the defendant who made the plea or was a participant in the

plea discussions:

1. A plea of guilty which was later withdrawn;

2. A plea of nolo contendere;

3. Any statement made in the course of any proceedings under

state procedure regarding either of the foregoing pleas; or

4. Any statement made in the course of plea discussions with an

attorney for the prosecuting authority which do not result in a plea

of guilty or which result in a plea of guilty which is later

withdrawn.

B. However, such a statement is admissible in:

1. Any proceeding wherein another statement made in the course

of the same plea or plea discussions has been introduced and the

statement, as a matter of justice, should be considered

contemporaneously with it; or

2. A criminal proceeding for perjury or false statement if the

statement was made by the defendant under oath, on the record and in

the presence of counsel.