A search continues for a Texas man who is believed to be missing in Rocky Mountain National Park.

Troy Green of San Antonio had planned to attend a conference in Denver, about 65 miles southeast of the park. His wife notified police when she didn't hear from him Thursday.

The 39-year-old man didn't arrive at the conference as planned Friday, but park rangers found a vehicle that matched his rental car at the park's Bear Lake parking lot early Friday.