APD: Man kills passenger in South Austin crash

A man has been arrested in connection with a crash that killed his passenger in South Austin.

Sebastian Michael Dean, 23, has been charged with intoxication assault. Austin police say updated charges of intoxication manslaughter are pending against Dean.

Sebastian Michael Dean (Austin Police Department)

APD says that a 2017 dark gray Cadillac CTS was traveling southbound in the 2300 block of S. 1st Street in the early morning hours of March 13 at a high rate of speed. The driver, identified as Dean, ran a red light at the intersection of S. 1st and W. Oltorf streets and then collided with a telephone pole in the 2400 block of S. 1st Street.


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The passenger, Samuel Adam Williams, 22, sustained life-threatening injuries and was transported to St. David's South Austin Hospital where he passed away in the early morning hours of March 23.

Anyone with information on this crash is asked to call APD's Vehicular Homicide Unit at 512-974-4278. Tips can also be submitted by downloading APD's mobile app, Austin PD, available for free on iOS and Android.

APD says this is Austin's 21st fatal traffic crash of the year, resulting in 22 fatalities. At this time last year, APD says there were ten traffic fatalities.