Manitou Springs officials are reporting the death of a hiker Tuesday on the popular Manitou Incline trail.

The city said in a joint statement with Manitou Springs fire and police that the death was of a 64-year-old man from Oregon, based on his ID. Bystanders called for help around 10 a.m. after finding the man in “medical distress” on the trail, according to the city.

When emergency personnel responded, the man was found unresponsive and later pronounced dead. The cause of death is still under investigation, according to the statement.

“We thank the bystanders who quickly intervened and attempted CPR,” said Manitou Springs Fire Chief Keith Buckmiller in the statement. “Their immediate actions are commendable and reflect the compassion of our community.”

The Manitou Incline is a popular and challenging trail, bringing hikers up over 2,700 steps and 2,000 feet of elevation. The trail is managed by the city of Colorado Springs. The statement said that Colorado Springs officials had been made aware of the death.

“City officials remind all climbers, especially those traveling from out of state, to thoroughly assess their physical condition, understand the difficulty of the climb, and come properly prepared,” read the Manitou Springs statement.