A 5-year-old boy whose home was destroyed in the deadly tornado that swept through Moore, Okla., last month was killed in a dog attack Sunday at the Arkansas home where he had been staying.

Officials in Jessieville, Ark., tell Fox 16 the boy and his 2-year-old sister were staying with a family friend, 50-year-old Lynn Geiling, as their parents worked on rebuilding their home back in Moore.

Geiling told investigators the Bullmastiff attacked when the animal saw the boy throwing a tantrum. She was able to pull the dog off the child but he was later pronounced dead at a local hospital.

"You can't imagine, you know, what this family and friends are going through right now," Garland County Deputy Scott Hinojosa told Fox 16.

Animal control officials say the dog was killed by a resident Monday. Investigators have not yet determined whether anyone will face charges in the boy's death.

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The Associated Press contributed to this report