ESTES PARK, Colo. -- Police reviewed bank and phone records Friday in hopes of locating a Nepalese college student last seen Sunday leaving for work at an ice cream shop near her apartment.

Pratistha Budhathoki, 20, an exchange student at St. Cloud State University in St. Cloud, Minn., was hired for a summer job in Estes Park, the resort town at the eastern entrance to Rocky Mountain National Park, about 50 miles northwest of Denver.

Budhathoki is 5 feet 3 inches tall with black hair and brown eyes and was last seen leaving for work around 9:30 a.m. She was declared missing when she never arrived.

Budhathoki shared the apartment with friends from Nepal and didn't have a boyfriend or anyone else with whom she would have left unexpectedly, police Cmdr. Wes Kufeld said.

Kufeld said she did not own a car.

"It's a big deal, if you think about it. You know, no phone call, nothing from her at all," said friend Aswin Pandey. "It kind of worries me a lot."

Investigators were checking with friends and college officials to determine whether she decided to return to St. Cloud.

Witnesses said she was associated only with a small group of exchange students and the incident is very uncharacteristic.

"She's not that kind of person. She wouldn't leave without informing anyone," said friend Sanbhya Khakyea.

7News timed the walk from Budhathoki's apartment to her workplace. It should have taken her about two minutes.

"It's very hard for me, and it's very hard for all the Nepalese because we are a small community here and we are from a different country," said Pandey. "I pray to God she's OK."

Kufeld said investigators have no explanation for her disappearance but have no reason to believe she was abducted. Budhathoki left her passport at her apartment, which would likely prevent her from returning to Nepal, he said.

"She disliked the wilderness and was not a hiker or mountain biker, so it's unlikely she got lost in nearby mountains," Kufeld said. "It's just really unusual. It's just highly unusual for her to even be late for work."

Police plan to track down any phone calls she may have made before her disappearance.

If you have any information regarding this subject, please contact the Estes Park Police Department.