CARROLLTON, Texas (CBSDFW.COM) – A 26-year-old Flower Mound man faces multiple charges of aggravated assault with a deadly weapon after stabbing two people and strangling a third following a crash on I-35E in Carrollton Thursday, March 18, police said.

None of the injuries are believed to be life-threatening.

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The incident happened in the express lanes just before 5:00 p.m.

Witnesses said the suspect, later identified as Dillon Stoffregen, got out of his vehicle, was first in a verbal altercation, and then began assaulting other drivers involved in the crash as well as a passerby who stopped to intervene.

Dillon Stoffregen mugshot (Source: Carrollton Police Department)

Detectives ask that everyone who recorded either the crash or the assaults that followed contact them at (972) 466-3333 or

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The victims are being treated at three different North Texas hospitals.

A fourth man who was injured in the initial crash is also being treated for non-life-threatening injuries.

Stoffregen was also injured during the assault.

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He was treated at and released from Parkland Hospital in the overnight hours. He was then transferred to the Dallas County Jail. Staff