Law enforcement officers, including many with search and rescue, are still looking for a missing ASU professor in Oak Creek Canyon near Sedona.

Debra Schwartz of Tempe has not been seen in a couple of days.

Gerry Blair with the Coconino County Sheriff's Department told 12 News the campsite host at Pine Flat Campground contacted the department at about 9:07 a.m. Friday, after he visited Swartz's campsite to check on her, since she had not paid to extend her time there. The campsite host said she was camping by herself.

"We found her car; her tent was at the camp intact," Blair said. "She left a number of [things] behind."

When the Deputies arrived at Pine Flats, they found Schwartz’s vehicle and her assembled tent and other camping equipment. It appears that she left her campground for an unknown destination and failed to return as scheduled, authorities said.

Coconino County Sheriff’s Command Staff, Deputies and Coconino County Sheriff’s Search and Rescue personnel conducted an intensive ground search Friday, aided by the Arizona Department of Public Safety Air Rescue Helicopter based in Kingman, Arizona. Although the helicopter crew has conducted multiple flights in the area they have not detected any presence of Schwartz.

"It's cold and windy and we anticipate the weather worsening at night -- there's the possibility of snow," said Blair. "Obviously there is an urgency to find her."

Both the Coconino and Yavapai counties search and rescue groups, some equipped with search dogs, continued the search Saturday morning.

Detectives are also working with the ASU Police Department to find out any information that can help them.

The ASU English department released the following statement about Schwartz's disappearance:

Our hearts are with those seeking our missing colleague, Debra Schwartz, in northern Arizona, and the ASU Department of English stands ready to help in any way possible to find her and bring her home.This is an upsetting situation at a stressful period in the academic cycle, and students and faculty might need support given the uncertainty involved. Students can seek assistance at ASU Counseling Services and faculty and staff are encouraged to utilize ASU’s Employee Assistance Office.

Schwartz is described as a white woman, who is 59 years of old, about 5 feet 4 inches tall and 160 pounds. She has green eyes and brown hair.

If you have seen her, please contact the Coconino County Sheriff's Office at 1-800-338-7888, 928-774-4523 or call Silent Witness at (928) 774-6111.