A professional cyclist has resigned from his team following the accusation that he shot a gun while riding his bike as a way to vent after a "bad day."

Professional cyclist Danny Summerhill of Centennial is being charged with reckless endangerment and disorderly conduct after discharging a Walther P22 .22 caliber handgun during a training ride back on Feb 22.

According to the sheriff’s report, Summerhill was riding along the 10000 block of South Deer Creek Road when he unloaded three shots into a hillside between two homes.

FORT COLLINS, CO - AUGUST 22: Daniel Summerhill riding for UnitedHealthcare goes to the medical car for attention after he crashed on the descent of Rist Canyon during stage six of the 2015 USA Pro Challenge Loveland to Fort Collins.
FORT COLLINS, CO - AUGUST 22: Daniel Summerhill riding for UnitedHealthcare goes to the medical car for attention after he crashed on the descent of Rist Canyon during stage six of the 2015 USA Pro Challenge Loveland to Fort Collins.

An officer met with Summerhill, who said he had been riding his bike in Deer Creek Canyon for five hours and needed to let loose before he returned to his vehicle.

“It was just BOOM, BOOM, BOOM. And it was I thought at least five rounds,” said Kristen Flannery.

Flannery lives on the road and was outside reading a book when she claims she saw Summerhill ride by and pull a handgun out of a pouch in his training jersey.

“Literally I was like what in the actual what is going on? Like is that a gun?” she said.

MELBOURNE, AUSTRALIA - FEBRUARY 01: Daniel Summerhill of Team United Healthcare chase the motorbike during the Cadel Evans Ocean Road Race on February 1, 2015 in Melbourne, Australia.
MELBOURNE, AUSTRALIA - FEBRUARY 01: Daniel Summerhill of Team United Healthcare chase the motorbike during the Cadel Evans Ocean Road Race on February 1, 2015 in Melbourne, Australia.

The report says deputies found three shell casings along the road. Two in front of Flannery’s home and another about 50 yards away.

“You know he might be killing people,” said Joe Porter who chased Summerhill down. “We didn't know what he was doing. It didn't make any sense.”

Porter claims he hopped in his truck and pursued Summerhill, unaware of his motive. When he confronted him he said Summerhill claims he fired the shots because he needed to vent.

“I have one fear in this life: that's something happening to my wife,” Porter said. “We've been married thirty years and the fact that she could've gotten shot and killed standing on this beautiful piece of property – yeah, I took exception.”

The report states Summerhill was riding through the canyon last summer and heard gunshots, that’s why, he claims, he fired the rounds, unaware homes were nearby.

Tuesday afternoon, Momentum Sports Group, which owns the United Healthcare Cycling team, sent the following statement to 9NEWS:

"Momentum Sports Group holds our athletes to the highest standards of ethical conduct and accountability – both on and off the road. Following an internal investigation, we accepted Mr. Summerhill’s resignation from the team, effective immediately. The personal actions of one individual do not represent the values of our dedicated athletes, sponsors or fans, and we offer our sincerest apologies to anyone who may have been impacted.”

Summerhill’s next court appearance is scheduled for July.