Until then, they said, the 59-year-old man's identity must be withheld.
A medical examiner found no apparent foul play in the death of the man, who was divorced and most recently lived in Wallington. Toxicology results were still pending.
The body was discovered off River Road just before 10:30 a.m. Saturday and brought to the Kearny Boathouse deck before being collected by Bergen County authorities.
He had his wallet, with his identification, in his pocket, they said.
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