Authorities are hoping for the public's help in locating 39-year-old Micah Lambert.

Lambert was reported missing to the Colorado Springs Police Department on Sept. 24 and was last seen at a friend's house on the morning of Sept. 23.

On Monday, the Teller County Sheriff's Office said Lambert may be endangered. Friends found Lambert's vehicle abandoned in the parking lot of the Catamount Recreational area near Divide last Friday night.

From Friday to Tuesday morning, search and rescue crews were using several different methods, including scent dogs and sonar boats, to locate her.

Tuesday afternoon the search was called off and Micah had not yet been located. Investigators are continuing to track down leads.

In a release sent out Thursday, the sheriff's office stated the following:

After four days, Search and Rescue personnel have completed their mission and have not been able to locate any evidence that indicates Ms. Lambert is in the Catamount area.

The area of Teller County has been experiencing below-freezing temperatures at night as well as snow.

The Teller County Sheriff’s office is requesting if anyone has seen her or if anyone saw her vehicle which was parked in the Catamount Recreational Area parking lot between Sept. 24 and Sept. 29, to please call their tip line at 719-687-9652, choose option 5 and please leave a callback number.

A picture of her vehicle is below: