LAS VEGAS (KLAS) — The four-year-old boy found dead Friday while left at home with his stepmother died as a result of “blunt force injuries,” according to the Clark County Coroner’s Office.

Medical personnel responded to the 1900 block of North Walnut Road, near Lamb Boulevard and Lake Mead Boulevard in the northeast valley Friday evening. At the scene, they found a four-year-old boy, later identified as Marcel Foster, unresponsive.

Marcel was taken to UMC where he was pronounced dead. Physicians found injuries on the boy consistent with abuse. The coroner reported Monday that Marcel’s death resulted from multiple blunt force injuries.

After an investigation by Metro Police, it was found Marcel was left at home with his stepmother, 29-year-old Patricia Atalig, while the boy’s father was at work. When the father came home, he found his son unresponsive and called 911.

Police say Marcel sustained a head injury earlier that afternoon.

Atalig was then arrested and taken to the Clark County Detention Center. She is charged with open murder and child abuse resulting in death.