HUNT COUNTY (CBSDFW.COM) – The Hunt County Sheriff’s Department took two 21-year-olds into custody Sunday after a two-year-old in their care was found beaten to death, a department spokesman said.

The two called 9-1-1 Sunday morning to report that the child had stopped breathing.

Hunt County Sheriff’s Department spokesman Joe Knight said the two told an operator they would take the child to the hospital, but paramedics stopped them on the way.

Authorities say the toddler was black-and-blue and already dead when they stopped the vehicle. Paramedics declared the child dead from excessive trauma and police arrested the man and woman shortly after. The department expects to formally press charges shortly.

“We’re terming it massive,” Knight said. “Worst I’ve ever seen.”

Knight said the two are cousins of the child’s mother. But authorities can’t find her despite searching at addresses in Dallas and other locations.

Authorities say they are desperately trying to reach her and are not identifying the child or the suspects until they do.

Police believe the child suffered the abuse recently, because a Facebook photo taken weeks ago showed him in good health, Knight said.