SLEEPY HOLLOW, Ill. (WLS) -- Police in far northwest suburban Sleepy Hollow said a 19-year-old woman and her 17-year-old brother were stabbed during a home invasion and assault Monday afternoon.Police Chief James Linane said the suspect entered the home around 12 p.m. through an open front door and attacked the female victim. Police said she was stabbed and the attacker attempted to sexually assault her.The woman's 17-year-old brother was stabbed trying to defend his sister, Linane said. The siblings were able to escape. One neighbor said he saw the girl run naked, desperate for help. Her bleeding brother ran to the Janackis' home."He was bleeding profusely, looked like he had been attacked," said Chris Janacki. "I just said, 'Stay here, the police are on their way.' He didn't say anything to me. He looked like he was... he was bleeding and he looked like he was somewhat in shock."Police said the victims were home because they are home schooled.Police said the suspect then left the victims' home and went to another house behind the home the siblings escaped to, where he attacked two other people, who were not injured."The wife was out in the backyard working on the lawn. And that's when the person covered in blood with the knife in his hand approached her and threatened her, and wanted her to - my understanding was he wanted to get into her car and he was going to get away," said neighbor Amy Foot.The woman's son helped fight off the suspect. He then fled from the house and officers arrested him nearby. Linane said a Taser was used to apprehend him.The 17-year-old boy was seriously injured in the attack, and is being treated at Sherman Hospital. The 19-year-old woman was also taken to Sherman Hospital for treatment. Linane said both victims are expected to survive.Police said the suspect, who has not been identified but who police said is a local man in his late 20s or early 30s, had two butcher knives with him at the time of his arrest. Police said the victims did not appear to know their attacker.Linane said police believe the suspect has a criminal history, and will know more later Monday and Tuesday. Police said it appears the suspect was under the influence of drugs and alcohol at the time of the attack.Linane said the attack was "highly unusual for this town," but said it was an isolated incident and there is no danger to the rest of the community.