Appeal by the defendant from a judgment of the County Court, Rockland County (Nelson, J.), rendered June 24, 2014, convicting him of course of sexual conduct against a child in the first degree, upon his plea of guilty, and imposing sentence.
Ordered that the judgment is affirmed.
The County Court did not improvidently exercise its discretion in denying, without a hearing, the defendant’s motion to withdraw his plea of guilty. A motion to withdraw a plea of guilty is addressed to the sound discretion of the court, and its determination generally will not be disturbed absent an improvident exercise of discretion
(see
CPL 220.60 [3];
People v Seeber,
The defendant’s contention that he was not afforded the effective assistance of counsel is based, in part, on matter appearing on the record and, in part, on matter outside the record and, thus, constitutes a “mixed claim of ineffective assistance”
(People v Maxwell,
