Ex-con nabbed in random knife attacks

An ex-con has been nabbed for two knife attacks on No. 7 trains in Queens, police said Sunday.

Donny Ubiera, 32, was wanted for a pair of unprovoked slashings on Friday and Saturday. Cops released a photo of him Saturday and asked the public’s help tracking him down.

Investigators gathering video surveillance footage to track his movements came across Ubiera on Utopia Parkway Saturday night and recognized him as the suspect, police said.

He’s charged with two counts each of attempted murder, assault and criminal possession of a weapon.

The first attack occurred about 8:45 a.m. Friday on a Manhattan-bound No. 7 train as it idled at the Queensboro Plaza station, cops said.

The 26-year-old victim told police he was sitting in the train when Ubiera dropped a knife on the floor in front of him, then picked it up, mumbled something and slashed him in the face and arm, then ran off, cops said.

The victim told investigators he’d never seen the attacker before and didn’t interact with him before the slashing.

On Saturday, Ubiera allegedly struck again, stabbing a 55-yearold man in the neck with a kitchen knife as he sat on a bench waiting for the train at the 74th St.-Broadway station about 7:15 a.m., police said. Police recovered the knife in the station; the victim was rushed to Elmhurst Hospital Center is expected to recover.

Ubiera has served two prison stints for attempted drug possession and driving while impaired.

He completed his parole Sept. 21, public records show.

He was arrested on robbery charges less than four months later, on Jan. 10, accused of stealing beer from a bodega in Elmhurst, then flashing a meat cleaver at an employee who confronted him.

City Correction Department records show he was released from Rikers Island on May 23. On Sunday, NYPD Commissioner Keechant Sewell commented on Ubiera’s criminal background.

“We have arrested a suspect in two slashings on the subway this weekend. Your police are doing their job. We keep arresting him,” she said. “His record demonstrates that each time he is involved in unprovoked violence against innocent victims the criminal justice system has him back to the streets and the subways rather than jail or psychiatric treatment. He inevitably targets another victim. This is nothing if not predictable.”