^^^This^^^
It appears it was the Special Victims Unit tasked with the investigation. Are there any SVU detectives that died in 2017?
NYPD 'looking into' latest Anthony Weiner sexting claims
The Special Victims Unit of the New York City Police Department is "looking into" new allegations that former Rep. Anthony Weiner had a months-long sexting relationship with a minor, FoxNews.com has confirmed.
http://www.foxnews.com/politics/2016/09/23/nypd-looking-into-latest-anthony-weiner-sexting-claims.html