Okla. Stat. tit. 22, § 22-723

state.

A. If a person in any state, which by its laws has made

provision for commanding persons within its borders to attend and

testify in criminal prosecutions, or grand jury investigations

commenced or about to commence, in this state, is a material witness

in a prosecution pending in a court of record in this state, or in a

grand jury investigation which has commenced or is about to

commence, a judge of such court may issue a certificate under the

seal of the court stating these facts and specifying the number of

days the witness will be required. Said certificate may include a

recommendation that the witness be taken into immediate custody and

delivered to an officer of this state to assure his attendance in

this state. This certificate shall be presented to a judge of a

court of record in the county in which the witness is found.

Oklahoma Statutes - Title 22. Criminal Procedure Page 226

B. A witness who has appeared in accordance with the provisions

of the summons shall not be required to remain within this state a

longer period of time than the period mentioned in the certificate,

unless otherwise ordered by the court. If such witness, after coming

into this state, fails without good cause to attend and testify as

directed in the summons, he shall be punished in the manner provided

for the punishment of any witness who disobeys a summons issued from

a court of record in this state.

C. If the witness is summoned to attend and testify in this

state he shall be tendered, at the time he is ordered to appear,

travel and expenses pursuant to Section 718 of this title for each

day he is required to travel and attend as a witness. A judge of a

court of record in this state may approve travel and expenses

pursuant to Section 718 of this title for witnesses who voluntarily

appear and testify in a criminal prosecution or grand jury

investigation upon proper affidavit and showing.