No the lawyer is admitting that the guy died. That is pretty clear. The question is did the person indicted do anything to cause that death.
The guy was a drunk. It is probably impossible to know when that injury was sustained.
From the article - “Perez, a Guatemalan immigrant, was a known alcoholic who had hundreds of run-ins with Mount Kisco and Bedford police. He had been arrested dozens of times in the village alone.” The police officer, if he did it, should be given a medal and a promotion. Is the term “Guatemalan immigrant” liberal code word for “illegal alien”?