US teens charged with young boy's murder after stealing car

Three teens charged with kidnapping and murdering 6-year-old boy after stealing his mother's car
Kingston Frazier (Supplied)

Three teenagers have been arrested and charged with the murder of a six-year-old boy in Mississippi.

Dwan Wakefield and D'Allen Washington, both 17, along with 19-year-old Byron McBride are accused of stealing a car with the child inside and later killing him.

The boy, Kingston Frazier, was left alone in a parked Toyota Camry early on Thursday morning (local time), authorities said.

It is not known whether the trio knew Kingston was in the car when the allegedly took it.

He was shot dead and his body was later found in the back of the car, which was left abandoned on the roadside.

Authorities publicly announced the boy's death on Thursday morning (local time) while surrounded by grieving family members.

6yo boy murdered by three teens who stole car, say police
Dwan Wakefield, D'Allen Washington and Byron McBride (Madison County Detention Center)

"A six-year-old is gone," said Kingston's cousin, Kolby Irby.

"His mother has to deal with this. That's her baby."

Kingston's mother, Ebony Archie, left him in the car, with its engine running, while she went inside a supermarket.

Despite the store's parking lot being patrolled by sheriff's deputies, security video shows another car driving up before a man gets out and drives off in Ms Archie's Camry.

The three suspects will be charged with capital murder for the killing of a child during a kidnapping and are set for initial court appearances Monday morning (local time).