The victim was hit outside the Xchange Place complex on New County Road at Riverside Station Boulevard just after 6:30 a.m.
The vehicle left the scene, but a person believed to be the driver was detained nearby.
The victim was hit so hard, that their sneakers were found in the middle of the street. The victim was rushed to the hospital where they remain in serious condition.
New County Road was closed for the investigation. It is the main road to High Tech High School.
The Secaucus Police Department said, "One pedestrian suffered serious injuries and transported to Jersey City Medical Center. Vehicle and driver have been located. Investigation is ongoing in conjunction with Hudson County Prosecutor's Office Regional Crash Unit."
It is a busy pedestrian area because it is not far from the New Jersey Transit Frank Lautenberg train station. There is an overpass near the corner and officers were testing speed and the ability to stop.
Residents living nearby say that it is normally a safe corner.
The name of the victim and the driver involved have not yet been released. Charges have not yet been announced against the driver.
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