Luis Pallchisaca was arrested in Queens for stabbing Roberto Gaspar on the Number 7 train in an unprovoked and random attack

Authorities have detained a 20-year-old man wanted in connection with a stabbing on a New York City subway train in Queens over the weekend.

Luis Pallchisaca, 21, of Queens, was arrested on Wednesday and charged with attempted murder and assault after allegedly stabbing a man'several times' on a northbound No. 7 train, according to ABC7NY.

Queens straphanger was stabbed severally in an unprovoked subway attack.

The stabbing happened around 11:20 p.m. on a southbound 7 train that was approaching the 111th Street station in the Corona section.

Police say the victim, Roberto Gaspar, a 25-year-old restaurant worker, was on the train when the suspect approached him from behind and stabbed him multiple times in the back with an unknown sharp object before fleeing the scene.

Pallchisaca — wearing a black hooded sweatshirt with the word ‘Champion’ written in white lettering, grey sweatpants, and black sneakers and captured on footage ‘smiling’ — took off immediately when the train pulled into the station.

Gaspar, a Guatemalan immigrant was on the way home from a grueling 10-hour shift at a Manhattan restaurant when he was knifed by the un-known man, according to friends.

‘I’m angry. He didn’t do anything wrong,’ Gaspar’s friend, Tomas Calel told the nypost in the days after the unprovoked attack. ‘I believe [the attacker] is a bad guy. Why did he do that? I want them to catch this guy.’

Gaspar was taken to New York Presbyterian/Queens Hospital and remains in critical condition hooked up to a ventilator. 

Pallchisaca’s arraignment in Queens Criminal Court was pending Wednesday night.

No known motive for the ruthless attack was immediately known.