MR. JUSTICE SHEA

delivered the opinion of the Court.

Defendant was charged by information with aggravated assault and possession of a weapon by a prisoner. The information was filed, and the defendant made his initial appearance on July 2, 1980, approximately 42 days after the offenses allegedly occurred. After a jury trial, defendant was convicted of both counts and sentenced to consecutive terms of 10 years and 15 years.

*269 On appeal, defendant contends that the trial court erred in refusing to dismiss the charges because of unnecessary delay between the time of the alleged offense and the filing of the information, initial appearance and arraignment. Defendant also contends that he was entitled to dismissal because he was denied counsel at his initial appearance. In affirming defendant’s conviction, we find that defendant has failed to show any unnecessary delay, and that appointed counsel is not required at the initial appearance.

On May 19, 1981, while incarcerated at Montana State Prison at Deer Lodge, the defendant attacked a guard with a “homemade baton” and a knife. He was not served with an arrest warrant and no charges were filed until July 2, 1981. On that date, the defendant appeared in court and was advised of the nature of the charges, the possible penalties, and his right to counsel. At the defendant’s request, the court appointed a public defender to represent him and scheduled arraignment for July 9, 1981. At the arraignment, the defendant pleaded not guilty to both counts.

The defendant moved to dismiss the charges on the grounds that he was not brought before a magistrate without unnecessary delay and the court failed to provide counsel at every stage of the proceedings. The motion was denied and the case was set for jury trial. Trial was held on October 27, 1981. The defendant called no witnesses, and presented no case at trial. The defendant’s counsel did not present an argument before the case was submitted to the jury. The jury convicted defendant, and he appeals the trial court’s judgment.

Defendant contends that his rights were violated by prison and county officials because he was not brought before a magistrate without unnecessary delay as required by section 46-7-101(2), MCA. He argues that the proper remedy for this violation is dismissal of the charges.

Section 46-7-101(2), MCA, provides:

“Any person making an arrest without a warrant shall take the arrested person without unnecessary delay before *270 the nearest or most accessible judge in the same county, and a complaint stating the charges against the arrested person shall be filed forthwith.”

The purpose of this statutory requirement is to protect the defendant from being jailed for a protracted time and prevented from assisting in his own defense. State v. Nelson (1961), 139 Mont. 180, 362 P.2d 224. The defendant here, however, was alreaady in the custody of the State prison. Consequently, an arrest was unnecessary, and the need to bring him before a magistrate to prevent unjust incarceration did not exist.

Therefore, defendant is unable to show any prejudice from the delay.

Finally, the proper remedy for a violation of section 46-7-101 is suppression of improperly obtained evidence. See State v. Benbo (1977), 174 Mont. 252, 570 P.2d 894. Here, the defendant made no motion to suppress and no suppression hearing was ever held. As a result of this, we have no evidentiary record upon which to review defendant’s claims. Therefore, dismissal is an inappropriate remedy.

Next, defendant contends that he was denied his right to effective assistance of counsel. This claim is based on the fact that he was not provided with counsel at his initial appearance. The United States Constitution requires the appointment of counsel for indigent defendants at all critical stages of the prosecution. Mempa v. Rhay (1967), 389 U.S. 128, 88 S.Ct. 254, 19 L.Ed.2d 336. A “critical stage” is any step of the proceeding where there is potential substantial prejudice to the defendant. See United States v. Wade (1967), 388 U.S. 218, 87 S.Ct. 1926, 18 L.Ed.2d 1149. The policy basis of the right is to allow the defendant to intelligently exercise his rights and prepare a defense, and to counterbalance the trained advocate of the State.

The initial appearance is not a “critical stage” of the prosecution in Montana. There was no potential for substantial prejudice to the defendant’s rights. The defendant *271 was merely made aware of the charges against him and informed of his constitutional rights. We therefore hold that the defendant’s right to effective assistance of counsel was not violated.

Affirmed.

MR. CHIEF JUSTICE HASWELL and JUSTICES HARRISON, DALY, SHEEHY, MORRISON and WEBER concur.