Updated

The custodial grandmother of a 2-year-old boy found dead this summer at a northern Arizona campground has been arrested on a child abuse charge, according to reports. The Yavapai County Sheriff's Office says charges against Nancy Collins and the boy's custodial mother, Christina Priem, "relate directly to events leading to Sylar Newton's death while in their custody." The boy was found dead in August.

Officers from the Flagstaff Police Department arrested Collins just after 10 a.m. Saturday morning on a child abuse warrant, and she was later booked, according to a report by MyFoxPhoenix.com.

Detectives had been searching for Collins since Thursday, and they said they found her at a motel in Flagstaff, according to MyFoxPhoenix.com.

On Thursday, detectives announced additional charges of intentional child abuse against 36-year-old Priem. She was previously arrested on charges of involving a minor in a drug offense. Her total bond amount was set at $300,000.

The Associated Press contributed to this report.

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