Two women vanish from small Colorado resort area

close Video

Case of missing Maryland woman now a homicide investigation

Fox Nation host Nancy Grace analyzes the case of Rachel Morin and the latest in the Gilgo Beach, N.Y. investigation.

Two women are missing from a small Colorado resort area, according to authorities.

Most recently, Melissa Whitsitt, 34, was last seen on the 100 block of Woodspur Lane in Winter Park, Colorado, the Grand County Sheriff’s Office said in a press release.

Investigators determined that an unknown man used Whitsitt’s phone to contact people in the Denver Metro Area on Aug. 13 before she vanished, according to the sheriff’s office.

“In May, she moved to Colorado to begin a job at Winter Park Resort,” Whitsitt’s relative said in a Facebook post. “While we’ve been working with authorities this week, we’ve been advised to post here in the event that any possible connections and/or contact might help. We sincerely appreciate all prayers for our family.”

HAWAII OFFICIALS PLEAD FOR DNA SAMPLES FROM FAMILIES OF MISSING PEOPLE AFTER DEADLY WILDFIRES

Most recently, Melissa Whitsitt, 34, was last seen on the 100 block of Woodspur Lane in Winter Park, Colorado, the Grand County Sheriff’s Office said in a press release. (Grand County Sheriff)

In what the sheriff’s office has described as a separate case, deputies and U.S. Forest Service law enforcement located 51-year-old Svetlana Ustimenko’s rental vehicle parked at the Deadhorse Trailhead area off of Grand County Road 73 near Fraser in late July.

MISSING LA WOMAN, SHOT, YANKED FROM CAR BY KIDNAPPER: ‘WE’RE SCARED,’ RELATIVE SAYS

The vehicle, which was set to be returned on Aug. 10, was parked at the trailhead “for an extended period of time” with no sign of Ustimenko. 

Grand County deputies and U.S. Forest Service law enforcement located 51-year-old Svetlana Ustimenko’s rental vehicle parked at the Deadhorse Trailhead area off of Grand County Road 73 near Fraser in late July. (Grand County Sheriff)

Local authorities and search-and-rescue teams, including cadaver dogs, have been searching the area since Aug. 11, but they have been unable to locate the missing 51-year-old woman despite dedicating on and off-trail ground rescuers, horses, drones, and more than 750 volunteer hours to find her.

RACHEL MORIN MURDER: MARYLAND SHERIFF SAYS SUSPECT ON THE LOOSE COULD STRIKE AGAIN

Local authorities and search-and-rescue teams, including cadaver dogs, have been searching the area since Aug. 11, but they have been unable to locate the missing 51-year-old woman. (Grand County Sheriff)

“This case highlights the incredible work and dedication of our professional Search and Rescue volunteers from Grand County and our surrounding entities. The family and I are very grateful to them for their courageous efforts,” Sheriff Brett Schroetlin said in a Tuesday statement.

MAUI MAYOR SAYS 850 PEOPLE STILL MISSING AFTER DEADLY WILDFIRES

• next Image 1 of 3

  Colorado officials crews have been trying to locate missing Florida woman Svetlana Ustimenko since Aug. 11. (Grand County Sheriff)

• prev next Image 2 of 3

  Svetlana Ustimenko never returned her rental vehicle, which was found by a trailhead near Fraser, Colorado, on Aug. 10. (Grand County Sheriff)

• prev Image 3 of 3

  Officials first located Svetlana Ustimenko’s rental vehicle parked by a trailhead in late July. (Grand County Sheriff)

Ustimenko is from Broward County, Florida, and had been diagnosed with a terminal illness. She “was struggling as she tried to cope and was attracted to the Colorado mountains,” Colorado authorities said in a press release.

CLICK HERE TO GET THE FOX NEWS APP

The sheriff’s office said on Monday that the “two cases are not related, and appear to be isolated incidents with no threat to the community.”

Audrey Conklin is a digital reporter for Fox News Digital and FOX Business. Email tips to audrey.conklin@fox.com or on Twitter at @audpants.