Authorities in Virginia are searching for a missing woman whose abandoned car was found in Shenandoah National Park over the weekend. 

Nicole Mittendorff, 31, of Woodbridge, Va., was reported missing on Friday, two days after her last contact with her family. Her 2009 Mini Cooper was found Saturday evening in a parking lot located in a remote area of the park. 

Virginia State Police and U.S. Park Police suspended the ground and air search for Mittendorff Sunday evening after a second day without success. Operations will resume Monday morning.

Police say Mittendorff's disappearance is not considered suspicious at this time. 

Family members told The Washington Post that they reported Mittendorff missing after she failed to show up for her scheduled shift as a Fairfax County Fire and Rescue first responder, an action they described as highly unusual.

"We are holding up as best as can be expected under difficult circumstances,” Mittendorff's sister, Jennifer Chalmers, told the Post Sunday. “At this time we are focused on finding Nicole and have the deepest appreciation for everyone helping. We hope and pray for a safe resolution in the near future."

The Post reported that Mittendorff's family members have speculated that she had traveled to Shenandoah National Park to train for a race. A Facebook page created to solicit tips and provide updates on the search noted that Mittendorff "likes to compete in multi-sport events such as triathlons and regularly runs half marathons [and] can often be found riding and running on trails."

Mittendorff stands five feet, six inches tall and has blonde hair and green eyes. Anyone with information about her whereabouts is asked to call Virginia State Police at (703) 803-0026 or email questions@vsp.virginia.gov. 

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