A former Boulder County deputy was taken into custody early Monday morning after he allegedly made threats toward sheriff’s office sites and fired gunshots on law enforcement properties in Colorado.

Denver7 reported that Tyler Boyd Reilly, 40, faces several charges, including felony counts tied to the overnight incidents. No one was hurt, and officials said the public faces no ongoing threat.

The case puts a hard focus on workplace security for deputies, dispatchers, and jail staff. A former colleague allegedly turned a rifle on the same institutions that once employed him.

Overnight calls, threats, and a vehicle hit

Dispatch received a call from Reilly around 12:02 a.m. Monday. He reported having anxiety.

At 12:08 a.m., he called back. That call was being transferred to the Westminster Police Department because he was in Westminster’s jurisdiction. During the transfer, officials say he made threats toward Boulder County Sheriff’s Office facilities, including headquarters and the county jail.

By about 12:37 a.m., a database indicated his vehicle was northbound on State Highway 287 from Dillon Road. Deputies staged outside headquarters, the jail, and communication campuses after the threats. Staff remained inside those sites.

Cases built on sudden threats and rapid police response often hinge on how fast agencies lock down facilities and track a suspect, a pattern also seen when a New York man was arrested for allegedly threatening to kill U.S. Attorney Jeanine Pirro.

Rifle fire at headquarters, then custody

Around 1:08 a.m., a sergeant saw Reilly at the front door of Boulder County Sheriff’s Office headquarters. He was armed with an AR-15-style rifle. He fired multiple rounds at the building’s entrance area.

Deputies confronted him and took him into custody outside the entryway. The arrest happened without incident.

Boulder County Sheriff’s Office spokesman Vinnie Montez stated that law enforcement did not return fire in the paired episodes.

"No shots were fired from either Boulder County Sheriff's Office personnel or Broomfield law enforcement during either of the two incidents."

Investigators later learned Reilly went to the Broomfield Police Department and fired rounds at multiple patrol vehicles. Denver7’s account did not fully order that Broomfield sequence against the headquarters shooting beyond the later discovery.

Chaotic armed confrontations with police can escalate in seconds, much like a naked man who fired a flamethrower at Florida deputies in a bodycam standoff.

What the charge lists show

As of Monday afternoon, authorities listed separate charge sets for the Boulder County Sheriff’s Office incident, the Broomfield incident, and a post-custody event at the jail.

For the Boulder County Sheriff’s Office incident, the listed charges were Attempted First-Degree Burglary (F4); Felony Menacing with a Deadly Weapon (F5); Attempted First-Degree Criminal Trespass (F6); Criminal Mischief, Damage Between $2,000 and $5,000 (F6); Prohibited Use of Weapons (M1); Resisting a Peace Officer (M2); Reckless Endangerment (M2); and Obstructing Governmental Operations (M2).

For the Broomfield Police Department incident, the listed charges were Criminal Mischief, Damage Between $100,000 and $1,000,000 (F3); Prohibited Use of Weapons (M1); Reckless Endangerment (M2); Obstructing Governmental Operations (M2); and Second-Degree Criminal Trespass (Petty Offense).

After custody, an incident at the Boulder County Jail produced an additional count: 2nd Degree Assault on a Peace Officer Causing Bodily Injury (F4). Public materials summarized in the Denver7 account did not detail who was injured or how that alleged assault occurred.

Arrests that follow shocking violence and disturbing conduct toward authorities remain a steady theme in crime coverage, including when a Pennsylvania man allegedly stabbed an elderly woman to death and told police “they all have to die.”

Employment history and the resignation

Reilly began with the Boulder County Sheriff’s Office in 2012. He started at the Boulder County Jail, then moved into operations and patrol.

A Boulder County Sheriff’s Office press release stated the end of that career in plain terms.

"He resigned on May 25, 2024 in lieu of termination for cause."

Sheriff Curtis Johnson spoke later Monday at a news conference. He said Reilly would have been terminated if he had not resigned. Johnson did not give further cause details.

On certification, Johnson pointed to Peace Officer Standards and Training rules.

"To be disqualified [from working in law enforcement], there have to be disqualifying offenses that POST recognizes to take away their certification, and so you can read between the lines."

Investigators and the public still lack a full public record of any specific disqualifying conduct tied to that May 2024 exit. Johnson framed the line as something readers could infer. He did not name the underlying offenses.

Sheriff’s response and facility lockdown

Johnson called the overnight violence alarming because it came from a former employee.

"It's certainly frightening, disheartening, that someone would, especially a former employee, use that level of violence towards the organization that formerly employed him."

He also said he knew of no earlier similar acts aimed at Broomfield police or his own office.

"It's certainly concerning to me, but I'm not aware of any prior or similar acts involving the Broomfield Police Department or the Boulder County Sheriff's Office."

Staff safety sat at the center of his remarks. Johnson stressed that dispatchers, jail deputies, and patrol deputies should not report for duty fearing a former coworker.

"Making sure that our people are safe is a priority, and they shouldn't have to come to work, whether they're a 911 dispatcher or a jail deputy or a patrol deputy, believing that someone they used to work with was out to harm them."

The sheriff’s office closed its lobby Monday. The public was directed to civil services at 303-441-3608 and records at 303-441-3600, with email contacts listed for civil business and tips. Tips were requested at [email protected].

When a suspect’s past includes prior system contact, agencies face renewed scrutiny over monitoring and response, a pressure point also present after police identified Wisconsin knife attacker Corey Ruiz as a serial felon.

What remains for investigators and the courts

Reilly is the named suspect in custody. Authorities have not publicly released the exact words used in the alleged threats on the 12:08 a.m. call.

They also have not publicly released a minute-by-minute order proving whether the Broomfield vehicle shootings came before or after the headquarters gunfire. Denver7 described the Broomfield facts as learned later.

Prosecutors will need to prove each listed count with evidence from the dispatch calls, vehicle tracking, scene forensics, and witness accounts from the sergeant and other personnel. The high-end Broomfield criminal mischief range, set between $100,000 and $1,000,000, will turn on documented damage to the patrol vehicles. The lower Boulder range sits between $2,000 and $5,000.

The post-custody felony assault count will require proof of bodily injury to a peace officer at the jail. No public results have been released on the medical facts of that allegation.

No primary charging packet, case number, or arrest affidavit appeared in the materials summarized Monday. The posture remains an arrest with enumerated charges, not a completed trial record. Guilt is not established.

Public safety stakes for Colorado agencies

Two law enforcement campuses took direct gunfire pressure in a single overnight span, yet officers ended the threat without firing their own weapons. That restraint matters. So does the speed of the staging plan after the threats hit the radio.

Street-level violence against officers and the public continues to test response systems nationwide, including cases where police sought a suspect after a woman was shoved in an alleged sex attack on a New York City sidewalk.

For Boulder County and Broomfield, the immediate operational tasks are clear. Secure damaged sites. Preserve ballistic and digital evidence. Support any injured officer tied to the jail count. Keep the public tip line open while the lobby stays restricted.

Johnson’s conference framed the human core of the story. People who wear the badge, staff the jail, or answer 911 should not clock in wondering whether a former teammate plans to harm them. That standard is basic order, not a luxury.

When someone once trusted with a badge allegedly aims a rifle at headquarters doors and patrol cars, the justice system has one job left that matters: prove the case in open court and protect the people still standing the post.