Dillon Siebert and the 2020 Denver Green Valley Ranch Arson Murders
Overview
In the early morning of August 5, 2020, a house fire at 5312 Truckee Street in Denver�s Green Valley Ranch neighborhood killed five members of two related Senegalese immigrant families. Investigators determined the blaze was intentionally set by three teenagers�Kevin Bui (then 16), Gavin Seymour (then 16), and Dillon Siebert (then 14)�who mistakenly believed someone at that address had stolen a phone.
The Crime
According to court records and news reports, Bui had been robbed in July 2020 and used a phone-tracking app to pinpoint what he believed was the robber�s location. He recruited Seymour and Siebert, obtained masks and gasoline, and in the overnight hours of August 4�5, 2020, the trio set the fire inside the home. The flames spread rapidly; three occupants survived by jumping from second-story windows, but five others died of smoke inhalation.
Victims (Names, Dates, and Location)
- Djibril Diol, 29 � died August 5, 2020; 5312 Truckee Street, Green Valley Ranch, Denver, Colorado.
- Adja Diol, 23 � died August 5, 2020; 5312 Truckee Street, Green Valley Ranch, Denver, Colorado.
- Khadija Diol, 22 months � died August 5, 2020; 5312 Truckee Street, Green Valley Ranch, Denver, Colorado.
- Hassan Diol, 25 � died August 5, 2020; 5312 Truckee Street, Green Valley Ranch, Denver, Colorado.
- Hawa Beye (infant, ~7 months) � died August 5, 2020; 5312 Truckee Street, Green Valley Ranch, Denver, Colorado.
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