2 people killed, 2 injured in 'horrific' New York City subway stabbings.

2 people killed, 2 injured in 'horrific' New York City subway stabbings.
Two people were killed and two others were injured in a "horrific" series of stabbings on a New York City subway line, Brooklyn's borough president said Saturday.
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The stabbings occurred between Friday morning and Saturday morning on the A train, according to police.
Authorities are investigating whether one person is responsible for all four stabbings.
Police were called to a Fort Washington station around 11:20 a.m.
Friday and found a 67-year-old man suffering stab wounds, authorities said at a news conference Saturday afternoon.
Transit chief Kathleen O'Reilly said that the victim had been stabbed by an unidentified man and was taken to the hospital for treatment.
On Friday night, just before 11:30 p.m., police received another call at the Far Rockaway station and found a man on the train with stab wounds on his neck and body.
He was pronounced dead at the scene, according to O'Reilly.
About two hours later, an employee of the Metropolitan Transportation Authority found an unconscious 44-year-old woman on a train suffering from multiple stab wounds, according to authorities.