Grandmother arrested for helping daughter cover up beating death of 2-year-old over potty-training
Kylen Shangreaux via Justice for Kylen Facebook page

The grandmother of a 2-year-old South Dakota boy, who was allegedly beat to death over potty training by his mother, has been taken into custody as an accessory in the child's death.

According to the Rapid City Journal, Sonya Dubray was arrested Monday after investigators stated that she cleaned up the crime scene and lied to them following the death of Kylen Shangreaux in July.

Kylen's mother, Katrina Shangreaux, was accused of beating her son to death and indicted in August on charges of first-degree murder, felony child abuse and neglect.

According to FBI agents, Shangreaux hit her son in his head and his stomach with her feet and fists until he suffered intracranial bleeding and died. The child's autopsy also revealed that boy also had bruises, bite marks and a torn scrotum.

Investigators state Dubray attempted to cover up the murder by laundering Kylen’s soiled clothing, used cleaners to destroy evidence in her home and misled them about Shangreaux’s previous abuse of the boy.

Dubray is being held on charges tampering with evidence, accessory to first-degree murder, making a false statement and misprision of a felony.