"We've been tracking a growing number of complaints about people being touched without consent, not only in a sexual way," said Timothy Tompkins, president of the Times Square Alliance, after the arrest.
The incident interrupted several Broadway shows, with audiences and actors told to stay inside theaters.
There were reports of at least one fatality.
An estimated 1 billion people worldwide will tune in to the celebration in Manhattan.
The ring fell about eight feet down a grate before being recovered.
An emotionally disturbed man was already known to law enforcement before being arrested Thursday.
Metal bollards will be installed around the city, including in Times Square.
The singer wore a low-cut dress for performance in second coldest Times Square celebrations.
If you don't want to stand in the cold for hours with no public bathrooms, there are some other options.
This would be the second coldest New Year's Eve in New York City if the temperature drops as forecasted.
If you're ready to brave the cold, here's what you need to know about attending the Times Square New Year's Eve celebration this year.
He strapped a low-tech device to his body using zip ties and Velcro, police said.
Trump had already been briefed on the situation when he sent the tweet.
In 2017 a whopping four Disney venues ranked in the top 10 most Instagrammed spots in the world.
Three people have been charged with involvement in the planned attacks.
TRL is back on MTV October 2 with a whole new crew of hosts.
The online music store and promotional platform makes 15 percent from all digital sales, and 10 percent from all merchandise sales on the site.
Richard Rojas, 26, returned from his Navy service with a drinking problem and had posted "crazy stuff" on social media.
Although there are no specific threats, authorities are providing heavy security for the annual New Year's Eve ball drop.
A taxi driver told an informant that ISIS wants an "operation" at the landmark.