A four-year-old Harris County boy was mauled to death Tuesday by two pit bull dogs.
The boy's mother tried to fight off the dogs after she heard her son's screams. The dogs didn't release the boy until deputies arrived minutes later, distracting them with lights and sirens.
The deputies then shot the dogs, killing one and injuring the other.
The boy, Pedro Rios, was flown to a Houston hospital where he died.
Pedro had been playing outside with his two-year-old brother in their mobile home neighborhood in eastern Harris County.
Deputies say they had not determined where the dogs came from.
No one had admitted to owning them. Neighbors say they thought they were strays.
The surviving pit bull was taken into custody by Harris County Animal Control.
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