delivered the opinion of the Court.
In
People v. Mikkleson,
After the petitioner pled guilty to the charge of first-degree sexual assault, he was sentenced to a term which was within the maximum and the minimum sentence in effect at the time of the commission of this crime. See section 18-1-105(1), C.R.S. 1973 (now in 1978 Repl. Yol. 8). The petitioner did not seek to file a direct appeal of his conviction or sentence. He did, however, subsequently request a reduction of sentence in a 35(a) motion. At the trial court hearing, the petitioner presented evidence which he contends would justify the reduction of the sentence. After a thorough consideration of this information, the trial court denied the petitioner’s 35(a) motion. An appeal of this denial was taken to the court of appeals, where the petitioner challenged the propriety of his sentence in light of the nature of the offense, the character of the offender, and the public interest.
The court of appeals found that there was no abuse of discretion in the trial court’s ruling and on this basis affirmed the ruling. Judge Kelly filed a specially concurring opinion, which expressed the view that the
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appeal should be dismissed because the court of appeals had no jurisdiction to review the trial court’s denial of the 35(a) motion. We agree. The jurisdictional issue involved here was resolved in
People
v.
Malacara,
The petitioner here seeks review of the propriety of his sentence by alleging that the trial court abused its discretion in not reducing his sentence. Implicit in a Crim. P. 35(a) proceeding is the duty of the trial court to use its discretion when considering the defendant’s motion. This requires, at a minimum, that the trial court consider all relevant and material factors which may affect the decision on whether to reduce the original sentence.
See People
v.
Smith,
The cause is remanded to the court of appeals for the entry of an order dismissing the appeal.
JUSTICE GROVES and JUSTICE LEE do not participate.
