Update on 9:30 a.m. Thursday, Sept. 12: The sheriff’s office has identified the suspect but is not releasing their identity at this time due to the ongoing nature of the investigation. They do not believe there is a threat to the public.
Boulder County authorities are asking for the public’s help identifying a suspect involved in a stabbing on Chapman Drive at the Tenderfoot Trail, west of Boulder, early Wednesday, Sept. 11.
The Boulder County Communications Center received the report of the stabbing at 7:46 a.m., according to the Boulder County Sheriff’s Office. The victim, a male hiker, was attacked by a man he had previously passed on the trail. The suspect, described as a white male around 60 years old, 6 feet tall with gray hair, fled toward the Realization Point parking lot. He was accompanied by a small, multicolored dog resembling a terrier, which authorities hope may help jog witnesses’ memories.
Eight sheriff’s deputies, along with city open space rangers, responded and searched the area. They believe the suspect has left the area, according to a press release.
The victim, who suffered multiple stab wounds, was taken to the hospital with serious injuries. His injuries are not believed to be life-threatening. Carrie Haverfield, a communications specialist for the sheriff’s office, said they do not have any new information about a motive.
“The victim is still being treated medically, so we have not been able to talk to him,” she said.
Anyone with information is urged to contact Boulder County authorities at bcsotips@bouldercounty.gov or 303-441-3674.

Sad to hear. We need to ban knives.