Colorado teacher used 'selfie mode' to film stabbing spree, say cops

Colorado Teacher Films Fatal Halloween Stabbing

Police described horrifying scenes during a knife attack in Colorado, where a small child was forced to witness the violence as the alleged perpetrator screamed about his testicles. Matthew Regnier, 33, a former art teacher at Monument Academy, recorded himself committing a deadly stabbing using a knife made from an animal antler, according to police.

Arrest and Victims

Regnier was arrested just before midnight on the 1400 block of El Paso Street. He was found naked, bloodied, and holding a two-year-old child unharmed. The arrest followed a domestic dispute call where one man and two women were discovered with severe stab wounds.

Evidence and Claims

Regnier claimed the attack was in self-defense. However, court documents reveal that video from his iPhone recorded in 'selfie mode' showed him screaming about being choked while appearing able to escape the strangulation attempt.

"I have literally cried every day," said Susan Reynolds, a local resident of 50 years. "It is just so shocking, it's hard to even fathom that this could take place."

The investigation continues as authorities evaluate the full circumstances of the attack.

Author's summary: A Colorado teacher filmed a deadly Halloween stabbing during a disturbing domestic incident, leaving one dead and others injured, while a child witnessed the attack.

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Daily Mail Daily Mail — 2025-11-06