In the first attack, the victim was stabbed at random shortly before 9 a.m. Friday on a train at the Queensboro Plaza station in Long Island City. The victim was cut in the face, but was not seriously hurt.
In the second attack, a man was slashed in the neck 7:20 a.m. Saturday on the 7 line platform at the Jackson Heights/Roosevelt Avenue station, according to police.
The 55-year-old said the attack was unprovoked.
Police say they are searching for Donny Ubiera, 32, of Queens.
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The victim was taken to Elmhurst Hospital.
The suspect fled in an unknown direction.
Anyone with information on either incident is asked to call the NYPD's Crime Stoppers Hotline at 1-800-577-TIPS (8477) or for Spanish, 1-888-57-PISTA (74782).
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