Yoganand Premachandra pleaded guilty to armed bank robbery in violation of 18 U.S.C. § 2118(a) and (d). The district court 1 accepted his plea and sentenced him to fifty-one months’ imprisonment. Premachandra appeals his convictions and sentence. We affirm.
I.
On July 25, 1992, Premachandra entered the First National Bank of St. Louis wearing a facial disguise and carrying an empty briefcase. After approaching a teller, he pulled out a pellet gun and demanded money. Pre-machandra escaped with more than $5,000 in cash. Approximately one year later, on June 19, 1993, Premachandra entered the same institution wearing a ski mask and carrying a large revolver-like weapon. He pointed the weapon at the tellers and demanded that they fill a backpack with money. Leaving with nearly $10,000 in cash, Premachandra fled in a vehicle which had the rear license plate covered.
Following his arrest and indictment, Pre-machandra, who has had a history of psychological problems, was ordered to undergo a mental evaluation at the United States Medical Center for Federal Prisoners. Although the examiners concluded that he was suffering from a mental illness, they opined that he was competent to stand trial. Shortly after the mental evaluation was completed, Prema-chandra withdrew his not guilty plea and entered a guilty plea,
II
We first consider Premachandra’s argument that the district court should have held a competency hearing before accepting his guilty plea. It is well established that an incompetent defendant may not make a valid guilty plea.
Godinez v. Moran,
— U.S. -,-,
An extensive mental evaluation at the United States Medical Center for Federal Prisoners revealed that “Mr. Premachandra is not presently suffering from a mental disease or defect rendering him mentally incompetent to the extent that he is unable to understand the nature and consequences of the proceedings against him or to assist
We now consider Premachandra’s challenges to his sentence. He first argues that the district court misapplied the Sentencing Guidelines when it determined that offenses for which he was convicted were not nonviolent crimes. Section 5K2.13 provides, in part, that a downward departure may be warranted “[i]f the defendant committed a non-violent offense while suffering from significantly reduced mental capacity.” United States Sentencing Comm’n,
Guidelines Manual,
§ 5K2.13, p.s. (Nov.1993). We review de novo the district court’s application of the Sentencing Guidelines.
United States v. Strassburger,
Section 5K2.13 does not define “non-violent offense.” At the sentencing hearing, the government urged the district court to define nonviolent offense by referring to section 4B1.2(l)(i), which defines “crime of violence.”
See, e.g., United States v. Cantu,
The district court declined to adopt this approach, however. Instead, the court simply considered the facts and circumstances of the robberies for which Premachandra was convicted and determined that they were not nonviolent.
See United States v. Chatman,
Premachandra contends that his crimes were nonviolent because he used a pellet
Finally, we consider Premaehandra’s argument that his offenses were single acts of aberrant behavior which justified a downward departure. Because Premachandra failed to raise this issue at his sentencing hearing or in a written objection to the pre-sentence investigation report’s recommendation that there are no factors which would warrant a departure, we review for plain error.
United States v. Carnes,
Because the Sentencing Commission did not consider single acts of aberrant behavior when formulating the guidelines, we have recognized that a spontaneous and seemingly thoughtless act may be a basis for departure.
See United States v. Garlich,
The convictions and sentence are affirmed.
Notes
. The Honorable Donald J. Stohr, United States District Judge for the Eastern District of Missouri.
. A defendant is competent if he "has sufficient present ability to consult with his lawyer with a reasonable degree of rational understanding” and "has a rational as well as factual understanding of the proceedings against him."
Dusky v. United States,
. In his brief, Premachandra relies on the fact that bank personnel and witnesses told police and FBI agents that they believed that the gun used in the 1992 robbery was a toy or water gun. At the time of his guilty plea, however, Prema-chandra signed a Stipulation of Facts which stated that he had used a pellet gun during the 1992 robbery and a large revolver-like weapon during the 1993 robbery.
