Ordered that the judgment is affirmed.
The trial court properly determined, after a hearing, that the fellow inmate who testified to a confession made by the defendant while in jail was not acting as a government agent; the facts of this case do not fall within the strictures of Massiah v. United States ( 377 U.S. 201). The informer in this instance had provided the information on his own initiative, and not in response to any agreement, understanding or prompting by the government (see, People v. Cardona, 41 N.Y.2d 333, 335). A prior attempt at cooperation, documented by a cooperation agreement, had terminated many months before the informer volunteered the information now in question, and no further attempt was made by the District Attorney's office to garner assistance from the informer. The informer's awareness that volunteering the defendant's confession might result in a lesser sentence for himself does not render the government's role in the matter more than one of "mere acceptance of proffered information" (see, People v. Cardona, supra, at 335).
The testimony of the informer as to the defendant's complete confession was properly corroborated pursuant to CPL 60.50 by the existence of the corpus delicti (see, People v. Murray, 40 N.Y.2d 327, 331), as well as by substantial additional circumstantial evidence from which guilt could properly be inferred. Viewing the evidence in the light most favorable to the People (see, People v. Malizia, 62 N.Y.2d 755, 757, cert denied 469 U.S. 932) the defendant's guilt was proven beyond a reasonable doubt.
We have examined the remaining contentions in the appellate counsel's brief and in the defendant's pro se supplemental brief and find them to be without merit. Mangano, J.P., Kunzeman, Kooper and Spatt, JJ., concur.