A 400-pound step-grandfather allegedly killed an 11-year-old after he pinned him down. Ohio authorities said that they were called to a property where the juvenile was "experiencing short shallow breaths".

Brown County Sheriff's office said they had been told the child was having a temper tantrum and passed out and when they arrived, he was unresponsive. The boy, who has been named Dylan Martin Davis, was pronounced dead at hospital.

On Saturday (18 November), the sheriff said that 58-year-old Donald Martin Jr., the boy's step-grandfather, was being charged with reckless homicide.

According to WLTV, the sheriff said it appeared the boy "was deceased as a result of positional asphyxiation or compression.

"There was some type of altercation between the 11-year-old and his grandmother and the step-grandfather stepped in and restrained the juvenile," the sheriff added. The 11-year-old's father, Sam Davis, told WLTV that his son was autistic.

"I feel sad. I feel angry. I feel confused," Davis told the channel, adding that his son and his step-grandfather, married to the boy's maternal grandmother, had got along. Prosecutors say that the boy weighed around 90lb while Martin is around 400lbs and that the boy was pinned down by Martin for several minutes.