A recently paroled high-risk sex offender was arrested Thursday in connection to the brutal, knifepoint rape of a woman in a Bronx elevator this week, cops said Thursday.

Level 3 offender Ramon Rotestan — who had been let out just six weeks ago after 16 years in jail — turned himself in around 8:30 p.m. at the 49th Precinct, police said.

The horrifying encounter happened around 10 p.m. Monday, when Rotestan followed the woman into the building at Bolton Street and Lydig Avenue in Pelham Parkway, authorities said.

The attacker stalked the victim as she entered the elevator, displayed a knife and barked “‘this is a robbery, don’t do anything stupid,’”cops and prosecutors said.

He then ordered her to “turn around” and “face the elevator” wall before allegedly raping her, prosecutors said. He also snatched $112 from the victim, police said.

The woman was taken to Jacobi Medical Center for treatment, cops said.

Rotestan was charged with rape and sexually motivated robbery, authorities said.

He has two prior arrests for rape — one on Dec. 11, 2005, and one from Feb. 2, 2006 — and one previous bust for attempted rape on Feb. 28, 2006, according to police sources.

In each of those cases, he was armed with a knife, approached his victim in an elevator, and robbed her, the sources said.

“That’s his M.O.,” a police source said.

He was released on parole March 30 from state prison — where he was held on rape, sexual abuse and burglary charges, records show.

His parole expires in March 2027.

Rotestan was ordered held without bail at his Thursday night arraignment at Bronx Criminal Court.

“This defendant has a long history of not only violently assaulting women but also failing to abide by court orders,” Assistant District Attorney Tala Nazareno told the court.

Nazareno said Rotestan’s latest alleged rape “is not just eerily similar, it is almost identical to the conduct committed by the defendant during the 2005 incidents that led to the defendant’s Bronx County convictions.

“In each of those incidents, the defendant followed a female complaining witness into an elevator and sexually assaulted her,” said Nazareno.

Rotestan has also served time for first-degree robbery, attempted criminal sale of a controlled substance, and criminal possession of a controlled substance, records show.

“Our most violent prisoners are continuously being released despite being a danger to the community, all for a second chance,” a police source said. “We’re doing a disservice to the community and almost being complicit in their next crime.”