BOULDER COUNTY, Colorado (WJW) – A man posing as search-and-rescue has been arrested for sexually assaulting a hiker.

The incident happened on July 25 in Boulder County, Colorado.

Deputies say a woman reporter she was hiking when a man driving what she described as a “search and rescue” vehicle offered her a ride to a different trail.

She said the man was wearing a green collared shirt, styled to look like a search and rescue uniform.

“While with him, she was sexually and physically assaulted,” the sheriff’s office says in a press release.

The woman was able to get away and immediately reported it to the sheriff’s office.

This week, detectives obtained a warrant for William Tidwell, 50. He was arrested on Monday.

Investigators believe there are more victims, possibly across multiple counties.