Donny Umbiera, 32, stabbed two men — one in the face and one in the neck — without causing separate incidents Friday and Saturday morning along the Flushing-to-Midtown subway line, the NYPD said in a statement. . The first attack took place at 8:40 a.m. during rush hour Friday morning at Queensboro Plaza in Long Island City, Queens, and left the 62-year-old victim with cuts to the face and arm, according to police. There was so much blood in the train car that it had to be shut down, sources said. The victim needed stitches to close his wounds. Ubiera then reportedly struck again the next day at 7:15 p.m. at 74th Street-Broadway Station in Jackson Heights, Queens. Police said he approached his unsuspecting victim, pointed a “large” knife and stabbed the man in the neck and fled. Donny Ubiera allegedly stabbed two men without provocation in different incidents on Friday morning and Saturday. NYPDThe first victim was stabbed in the face and the second in the neck. Gregory P. Mango The victim was taken to Elmhurst Hospital in critical but stable condition, police said. NYPD found a knife from the scene. Ubiera was arrested about 12 hours later. He faces two charges of attempted murder, assault and possession of a weapon. Ubiera faces two counts of attempted murder, assault and possession of a firearm. NYPD There was so much blood in the train car after the first attack that it reportedly had to be shut down. Gregory P. Mango