A Tulsa teenager and his mom are going to prison after a federal jury found them guilty of crimes related to a 2023 shooting.

Marco Dionte Atkins, 19, of Tulsa, was sentenced Wednesday to 15 years in prison followed by five years of supervised release, the Office of U.S. Attorney Clinton J. Johnson announced. Atkins was found guilty of assault with a dangerous weapon with intent to do bodily harm in Indian Country; and using, brandishing and discharging a firearm during and in relation to a crime of violence.

“Atkins acted recklessly and violently when he shot at someone outside of an occupied business, where children were present,” said U.S. Attorney Clint Johnson. “After being arrested, Atkins and his mother relentlessly campaigned against witnesses, trying to evade being held accountable for their actions. I commend law enforcement for their hard work in pursuing justice.”

Atkins’ mother, Sidney Brook Mayfield, 39, was sentenced to more than five years in prison followed by three years of supervised release. She was found guilty of retaliating against a witness, victim, and informant; and false declaration before a grand jury.

The pair were both found guilty of conspiracy to tamper with a witness, victim, and informant by corrupt persuasion and corruptly obstructing the due administration of justice.

Atkins and Mayfield are citizens of the Muscogee (Creek) Nation.

They will remain in custody pending transfer to the U.S. Bureau of Prisons.