19-year-old sentenced in 2020 Denver arson case that killed 5 family members
Gavin Seymour will serve 40 years in prison following Friday's sentencing
One of the three teenagers convicted of starting a house fire in the wrong home, killing a family of five, will serve 40 years in prison for second-degree murder.
"This is the worst and most senseless murder I've ever investigated," Denver Police Department Detective Neil Baker said at the sentencing on Friday.
Gavin Seymour, now 19 years old, was sentenced by Judge Karen Brody in a Denver District court on Friday afternoon for second-degree murder in connection to the deaths of Djibril Diol, 29; Djibril's wife, Adja, 23; the couple's 2-year-old daughter Khadija; Djibril's sister, Hassan, 25, and Hassan's 6-month-old daughter, Hawa Beye.
"This monster didn't just kill five people," Amadou Beye, father of Hawa Beye, said during the sentencing. "He destroyed me. He destroyed my family."
The arson at the Senegalese immigrant family's home in the Green Valley Ranch neighborhood of Denver on Aug. 5, 2020, began as a miscalculated revenge plot.
In the early morning, Seymour, Kevin Bui and Dillon Siebert — Bui and Seymour 16 at the time, Siebert 15 — allegedly started a house fire as an act of revenge for a stolen iPhone.
The trio broke into the home in masks and poured fuel around the first floor, lighting it ablaze.



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