The New York Police Department is tweeting it has one person in custody after a vehicle drove down a popular bike path near the World Trade Center site and memorial.
The driver then apparently emerged from the vehicle screaming and firing something that appeared to be a gun.
Witnesses say pedestrians and cyclists were hit -- but there's no word yet on how many people were hurt.
Law enforcement official now reprorting at least 6 people dead, 15 hurt after vehicle drives onto bike path near World Trade Center site.