Dead-eyed Colorado teenager is jailed for 40 years for burning baby, toddler and three adults alive in their home in horrific case of mistaken identity – with dad who lost wife and kids insisting quadruple-killer should be EXECUTED

A Colorado teenager has been given a 40-year prison sentence for burning a baby, toddler and three adults alive in their home in a horrific arson attack.

Gavin Seymour, now 19, was 16 when he started a house fire that killed five Senegalese family members in Green Valley Ranch, Denver, on August 5, 2020.

He pleaded guilty to second-degree murder and received the maximum sentence he faced in Denver District Court on Friday.

Investigators said the attack was a case of mistaken identity in a failed drug trafficking scheme. A man, woman and child survived the fire by jumping from a second-floor window.

Amadou Beye, who lost his wife Hassan Diol and six-month-old daughter Hawa, called for Seymour to be executed for his crimes and told KDVR: ‘This is not justice. If I could get the death penalty or life imprisonment, that would be justice.”

The 19-year-old was 16 when he started a house fire that killed five Senegalese family members in Green Valley Ranch, Denver, on August 5, 2020.

He pleaded guilty to second-degree murder of the five Senegalese family members (photo) and was given the maximum possible sentence in Denver court on Friday.

Amadou Beye, who lost his wife Hassan Diol and six-month-old daughter Hawa, called for Seymour to be executed for his crimes

Hassan Diol’s brother Djibril, his wife Adja Diol and their 22-month-old daughter Khadija also died in the fire. Their bodies were found on the first floor of the house, near the front door.

Seymour, who was charged along with teenagers Kevin Bui and Dillon Siebert, 19, was sentenced to 40 years in prison and five years of mandatory parole.

Judge Karen Brody said: ‘This is a tragedy which, I am sure to all involved, is incomprehensible. There was a loss of the most innocent lives.”

Seymour apologized in court on Friday, saying: ‘If I could go back and prevent all this, I would.

‘Not a moment goes by that I don’t feel extreme guilt and remorse for my actions. …I want to say to the family members and the community how sorry I am for all the harm I have caused.”

Beye addressed Seymour in court, saying, “I hope that when you die, you will die slowly and hard.

‘And you will die young. And when you die, I hope you will feel all the pain they felt when they died. And you will feel all the pain we feel right now.”

Hanady Diol, who lost his son Djibril and daughter Hassan in the fire, said he thought about killing himself after their deaths.

“Even if you kill five sheep or goats, you should get a maximum sentence,” he told the court.

‘This person here is talking about 40 or 30 years. That just means there is no justice. There is no judgment that the people who died are human beings.”

Hassan Diol’s brother Djibril (right), his wife Adja Diol (left) and their 22-month-old daughter Khadija also died in the fire.

Hanady Diol, who lost his son Djibril and daughter Hassan in the fire, said he thought about committing suicide after their deaths

Old bouquets, stuffed animals and other mementos hang on the fence around the family’s burned down house

Kevin Bui has also been charged for his involvement in the murders and his trial will take place next week

Siebert, who was 14 at the time of the arson, was sentenced to 10 years behind bars in February 2023 for his role in the crime.

Bui’s trial will take place next week and he faces charges including first-degree murder, extreme indifference, attempted murder with extreme indifference, burglary and assault with a deadly weapon.

Detective Neil Baker of the Denver Police Department told the court: ‘This is by far the worst, most senseless murder investigation I have ever investigated.

‘I can’t think of anyone else who is more entitled to a maximum sentence. There are five victims. Two of them were babies.”