(Syllabus.)
1. Criminal Law — Immunity to One Furnishing Evidence — Necessary Showing. Before a person can secure immunity under article 2, section 27, of the Constitution of this state, Okla. St. Ann., on account of incriminating evidence given by him as a witness before a grand jury, or in any court, such witness must have testified under an agreement made with the prosecuting attorney, approved by the court, or such witness must have claimed the privilege of silence, which was by the court denied, and such witness must have been compelled by the court to testify.
2. Evidence — Confession Must Be Free and Voluntary to Be Admissible. A confession, in order to be admissible, must be free and voluntary. It must not be exacted by any sort of threats or violence, nor obtained by any direct or implied promises, nor by the exertion of any improper influences.
3. Same — Voluntary Statement by Defendant not Inadmissible Because He Was in Jail and not Warned. The fact that the defendant was under arrest and in jail, and was not warned that any statement made by him might be used against him, will not affect the admissibility of any voluntary statement made by him which would otherwise be competent.
4. Appeal and Error — Presumption That Court Where Jury Waived Considered Only Proper Evidence and Properly Applied Law. Where defendants waive a jury and are tried before the court, the presumption is that the court considered only that evidence which was proper, and that the law of this state was properly applied.