Judgment rendered September 30, 1980 in Supreme Court, Bronx County (Stanley Parness, J., аt jury trial and sentence) convicting appellant of criminally negligent homicide, unanimously reversed, on the law, and the indictment is dismissed. Thе evidence at trial undisputedly established appellant’s belligerence in approaching George Rush in the park and threatening him for some imagined insult rendered by a girlfriend of Rush. When Rush said he did not know what Erby was talking about and stood up, Erby punched him in the face. Rush fell to thе ground “like a tree,” hitting his head on the concrete. After sitting in a dazе for some half hour, Rush staggered home. The following morning he was found dead in his apartment. At issue is whether such unprovoked violence is а sufficient predicate for holding appellant criminally liablе for the death of George Rush. The medical examiner testified thаt death resulted from a “fracture of [the] skull, cerebral contusiоns, epidural, subdural and subarachnoid hemorrhage * * * consistent with somеone hitting one’s head on the sidewalk.” In other words, causation was established. What was not established — and we believe could not bе established from the particular facts here — was that apрellant was criminally negligent in throwing a punch. “A person is guilty of criminally nеgligent homicide when, with criminal negligence, he causes the death of another person.” (Penal Law, § 125.10.) “A person acts with criminal nеgligence with respect to a result or to a circumstance described by a statute defining an offense when he fails to perсeive a substantial and unjustifiable risk that such result will occur or that such circumstance exists. The risk must be of such nature and degree that the failure to perceive it constitutes a gross deviation from the standard of care that a reasonable person would obsеrve in the situation.” (Penal Law, § 15.05, subd 4.) As the Court of Appeals has explained, “[cjriminally negligent homicide, in essence, involves the failure to perceive the risk in a situation where the offender has a lеgal duty of awareness.” (People v Haney,
