Andrew Koppel, an attorney for the city's Housing Authority, was found unconscious and not breathing in an apartment in Washington Heights in the early hours Monday morning, the New York Post reports.
A spokesperson for the NYPD tells PEOPLE: "Someone called 911. A guy he was with. The call came in at 1:40 a.m. that he was unconscious. He didn't respond, and he was pronounced dead."
According to the Post report, Koppel, who lived in Queens with his girlfriend and baby daughter, began drinking around noon at a bar in Hell's Kitchen, where he befriended a stranger, Russell Wimberly, a 32-year-old waiter.
The pair drank all day – Koppel drinking straight whiskey – and arrived together at the Washington Heights apartment around 11 p.m. After Koppel complained of not feeling well, Wimberly and a roommate, Belinda Caban, put him to bed.They later discovered he wasn't breathing and called 911.
The medical examiner will determine the cause of death, the NYPD tells PEOPLE.
Andrew was the third of Ted Koppel's four children with his wife, Grace Anne. He had three sisters.
Reporting by LIZ McNEIL