NEW YORK - FBI agents conducted a traffic stop Sunday just off the Verrazano bridge in connection to Saturday's explosion in New York City, the law enforcement agency announced in a tweet.
"We did a traffic stop of a vehicle of interest in the investigation," the agency's New York office tweeted. "No one has been charged with any crime."
As many as five people were detained after the traffic stop, according to ABC News and The New York Post, citing unnamed sources.
State Sen. Marty Golden, who represents parts of Brooklyn, said on Instagram that the FBI had made arrests on the Belt Parkway, underneath the Verrazano-Narrows Bridge, which connects Brooklyn and Staten Island.
Authorities investigating the explosion that injured 29 people said Sunday night that surveillance video shows what appears to be the same person moving bombs into place at the site of the explosion on West 23rd Street and a few blocks north on West 27th Street. The second device did not detonate and was being analyzed by the FBI.
New York Mayor Bill de Blasio said Sunday that as a result of the Saturday-night blast, New Yorkers and visitors will see "a very substantial NYPD presence this week — bigger than ever."
The heightened alert comes both as a result of Saturday's explosion and because world leaders are gathering here Monday for the United Nations General Assembly. President Obama is expected to attend the annual meeting on Tuesday, the last of his eight-year tenure.
Obama arrived in New York late Sunday afternoon and attended a private fund-raising event for Hillary Clinton.
De Blasio and New York Gov. Andrew Cuomo both said the explosion has no links so far to international terrorist groups, such as the Islamic State, though it's still early in the investigation.