A 54-year-old man died in police custody after he ran from cops who were trying to stop him from boozing up in a Harlem park, authorities said Saturday.
The man, whose identity wasn’t immediately released, was in Riverside Park at West 137th Street and Riverside Drive around 10 p.m. Friday when cops saw him drinking alcohol and tried to stop him, a police source said.
“He ran from them,” said the source, who added the man had a knife of indeterminate length on him — which is why he might have bolted…