The suspect wanted for randomly stabbing a straphanger on a Queens subway platform on Sunday has been arrested, according to the NYPD.

Luis Pallchisaca, 21, of Queens, was taken into custody on Wednesday afternoon and charged with attempted murder and assault for the alleged unprovoked knifing of 25-year-old Roberto Gaspar, police said.

Gaspar, a hard-working restaurant worker also from Queens, was looking at his phone on the platform of the 7 train at 111th Street when he was attacked from behind, according to police sources.

Pallchisaca allegedly plunged an “unknown sharp object” into Gaspar’s neck and twice in his back before fleeing the scene, the NYPD said.

The victim is currently in the ICU of New York Presbyterian/Queens Hospital, where friends said he requires the use of a ventilator and is unable to speak. 

The suspect is unknown to Gaspar, a Guatemalan immigrant who was on the way home from a grueling 10-hour shift at a Manhattan restaurant when he was knifed, according to friends.

“I’m angry. He didn’t do anything wrong,” Gaspar’s pal Tomas Calel previously told The Post. “I believe [the attacker] is a bad guy. Why did he do that? I want them to catch this guy.