A 25-year-old man was arrested Tuesday night on charges of raping a 76-year-old woman in her Umatilla home

Juan Cahuich-Santiago, boyfriend of the alleged victim's granddaughter, was staying with the family at the time, according to the Marion County Sheriff's Office. Other family members had gone to buy groceries on Jan. 9 and returned to find the grandmother lying sideways on a recliner with her clothes askew.

She had been able to stand before their trip to the store but could not stand up after their return. She was taken to a hospital.

In an interview, Cahuich-Santiago at first told investigators, through a Spanish-language translator, that he didn't rape the woman. Later, he admitted having sex with her while using a condom, according to the Sheriff's Office. He reportedly said he had been watching a pornographic movie and decided to approach her.
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An arrest affidavit states that the elderly victim suffers from a condition that prevents her from communicating verbally. She had been alone with the suspect from about 4 p.m. to 7:13 p.m. Saturday.

Cahuich-Santiago was supposed to take care of her. He was found sleeping on the couch when the family members returned. The victim had a bump on her forehead, bruises to her knees and her pony tail was pulled out, the arrest report says.

A used condom was found in the garbage and helped link the suspect to the attack on the victim, according to the report.

Cahuich-Santiago initially denied attacking the woman, but later admitted to it, investigators noted. "While alone with the victim, he was watching dirty movies and decided to approach the victim," the report states.

He also admitted that the victim is elderly and "incapable of saying no, in addition to not knowing what is going on around her," the arrest report says.

When he was finished with the victim, investigators said he placed the victim back in her recliner chair.

Marion officials noted that Cahuich-Santiago is not a legal citizen of this country and has no ties to the community, so they asked for a significant bond amount.
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