CASTLE ROCK, Colo. - A man was arrested in the death of a woman whose body was found after she was dragged behind a vehicle for at least a mile, authorities said Wednesday.

Jose Luis Rubi-Nava was arrested on a charge of first-degree murder and was being held without bail in the Douglas County jail, Sheriff Dave Weaver said.

Weaver said the woman, whose body was found Monday in a subdivision about 20 miles south of Denver, had not been identified.

Preliminary results of an autopsy indicated the woman died of asphyxiation and head injuries from being strangled by being dragged by a vehicle through a subdivision about 20 miles south of Denver.

Neighbors discovered the woman's body before dawn Monday. Her face was unrecognizable and an orange tow rope was found around her neck, said Nancy Foley, who lives near the house where the body was found.

The coroner's office declined to comment early Wednesday.

A photo of an unidentified couple was found near the body, but investigators did not know whether it was connected to the death, sheriff's spokeswoman Kim Castellano said earlier.

Foley said the incident has shaken the normally quiet Surrey Ridge neighborhood.

"I was trying to sleep last night thinking about how this poor lady was dragged, treated worse than an animal," Foley said Tuesday. "She was really mangled."

She said sheriff's patrols have increased and residents are more vigilant.

"We don't want to attract any more attention that what we're already getting. This is our little piece of heaven," she said.

omg...how sick is that

, I don't understand how people can be so cruel.

I'll volunteer to drag him behind a car.

makes me wonder if there is any hope for the good ones left,

Quinn, I'll hog tie him for ya.

This guy is the devil.

there is some very eveil people in this word