A predator raped and robbed a 25-year-old acquaintance after threatening her at knifepoint inside a Bronx hotel late last month, cops and sources said Thursday.

The backpack-wearing creep entered the Hotel OPUS on East 222nd Street near Ely Avenue in Baychester with the victim around 9 a.m. Aug. 29, before he suddenly flashed a knife and repeatedly demanded that she cooperate, authorities said.

He then grabbed $400 from the woman’s wallet before ordering her to remove her clothes and raping her, police said.

The backpack-wearing suspect allegedly raped a 25-year-old acquaintance inside the Hotel OPUS in Baychester, cops and sources said. NYPD

The victim was taken by EMS workers to Jacobi University Hospital Medical Center, where she was listed in stable condition.

By then, the sick a

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