It happened just after 11:30 a.m. at the Franklin Avenue subway station.
[Ads /]
Police say the victim, believed to be in her 20s, was stabbed with an unknown sharp object by the turnstiles.
There is no word on what led to the stabbing.
No arrests have been made and the investigation is ongoing.
[Ads /]
The stabbing is the second to happen in a Brooklyn subway station on Monday. A man was stabbed during a dispute at the Kosciuszko Street station just before 5 a.m.
In that incident, the victim was said to be stable and a suspect was arrested.
The stabbings happened just hours before the NYPD announced a weeklong crackdown on turnstile jumping with the hope that it will lead to a reduction in subway crime overall.
ALSO READ | Bill filed to prevent squatters from having rights in New York
Working to get squatting loophole changed in New York
----------
* More Brooklyn news
* Send us a news tip
* Download the abc7NY app for breaking news alerts
* Follow us on YouTube