Three Arapahoe County deputies who shot and killed an armed 18-year-old man in Centennial will not face any criminal charges related to the November incident.

Deputies Robert Knudson, Christopher Donovan and Robert Bratsch were “legally justified in their use of force to defend themselves and other officers from the threat posed by” Allen Llewelyn Fanning, who was shot Nov. 15, according to an officer-involved shooting summary.

The summary, dated Tuesday and addressed to Sheriff Tyler Brown, is signed by Arapahoe County Chief Deputy District Attorney Vicki Klingensmith.

All three deputies fired on Fanning, hitting him 10 times, according to the summary, following a traffic chase stemming from a domestic dispute linked to a love triangle. They collectively fired 21 shots at Fanning, who was inside a white Hyundai SUV.

Fanning led deputies on a traffic chase, refusing to pull over, and was eventually stopped when deputies boxed him in with their vehicles near the busy intersection of Arapahoe Road and Dayton Street.

The three deputies approached the SUV on foot with guns drawn, ordering Fanning to show his hands. Initially non-compliant to the command, Fanning then raised his right hand, pointing a gun at Knudson, and then directing the weapon toward Donovan, the summary stated. That’s when the trio opened fire. Additional deputies, who did not fire, were also at the scene.

Fanning didn’t fire his weapon, a Smith & Wesson M&P Shield .40 caliber pistol. The weapon was recovered from the vehicle as part of the investigation. There were five rounds in the magazine, the summary stated. Ammunition was recovered from the SUV’s console.

Multiple deputies pursued Fanning after being called to Big-O Tires shop, 6711 S. Potomac St., on a report of a disturbance — a confrontation between Fanning and 43-year-old Shawn Tyree Glover.

Glover told investigators Fanning was having an affair with his wife, 43-year-old Christina Padilla. The couple were separated at the time. Glover went to the tire shop to confront her and Fanning, who were there getting a flat tire fixed. Glover told police Fanning pointed a hand gun at him, before driving off in the SUV.

Glover faced criminal mischief and domestic violence charges connected to the incident, the sheriff’s office said at the time of the shooting. The shooting summary did not address the charges against Glover.

“Based on my review of all the evidence in this case, I find no evidence establishing Deputies Robert Knudson, Robert Bratsch and Christopher Donovan committed a crime” when they shot Fanning, Klingensmith said in the summary. “The totality of the evidence leads me to conclude Deputy Knudson, Deputy Bratsch and Deputy Donovan reasonably feared for their own lives and the lives of their fellow officers when they fired their weapons.”