The first police officer was on scene within four minutes of the 911 call. The suspect was in custody and no longer a threat to the public within one minute of that officer’s arrival—approximately five minutes after the initial call. The first Fire-Rescue unit, including paramedic who practice advanced life support, arrived within five minutes. The first ambulance was on scene within six minutes.

BOULDER, Colo. — In an effort to highlight the swift and dedicated work done by the city’s law enforcement, fire, and medical personnel, Boulder Police Department has released a detailed timeline of the emergency response to the tragic events of June 1, 2025. This information is based on a comprehensive review of 911 calls, data from the city’s computer automated dispatch (CAD) system, and body-worn camera footage.

The first officer was on scene within four minutes of the 911 call. The suspect was in custody and no longer a threat to the public within one minute of that officer’s arrival—approximately five minutes after the initial call. The first Fire-Rescue unit, including paramedic who practice advanced life support, arrived within five minutes. The first ambulance was on scene within six minutes.

Law Enforcement Response Specific Times

  • 911 call was received at 1:26 PM
  • Units were dispatched 50 seconds later
  • First officer arrived at 1:30 PM
  • Second officer arrived 27 seconds later
  • The suspect was in custody by 1:31 PM

  • Third officer and sergeant arrived: 1:34 PM

Fire-Rescue and Emergency Medical Response Specific Times

  • 911 call was received at 1:26 PM
  • Units were dispatched 50 seconds later
  • Fire Battalion Chief arrives and requests 5 ambulances to the scene at 1:31 PM
  • Medical transportation helicopters are requested by 1:32 PM
  • The first fire apparatus with a paramedic arrived at 1:32 PM
  • The first ambulance arrived at 1:33 PM
  • The second fire apparatus with a paramedic arrived at 1:35 PM
  • The third fire apparatus arrived at 1:36 PM
  • The second ambulance arrived at: 1:40 PM

Boulder Police Department is committed to community safety and protection, specifically throughout the celebrations in the month of June. The department is taking steps to protect our community by utilizing regional partners and local resources. Visitors should expect enhanced security measures and increased police presence. We encourage the public to 'see something, say something' - report any suspicious activity to an officer in the area or to dispatch. For safety in public spaces, it is important to be aware of your surroundings, let others know where you are, and follow your gut-instinct.

We remain committed to transparency, accountability, and the safety of our community.

--CITY--

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