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Reality TV star's son (6) beats newborn sister to death

Kathleen Steele
Kathleen Steele

A woman, who once appeared on a US reality TV show, has been charged with aggravated manslaughter after her six-year-old son beat his newborn sister to death after being left with her in a carpark.

The newborn baby, Kathleen Bridget Steele, was just 13 days old when she died last Monday afternoon.

Her mother, Kathleen Steele, who once appeared on reality TV show, I'm Pregnant and 55 Years Old, was arrested after police learned she had left the three children without adult supervision for 38 minutes while she visited a mobile phone shop in Florida.

The six-year-old was left with the newborn and his brother (3) after his mother went into the shop.

According to police reports, the six-year-old had tried to calm the baby when she started to cry.

However, as he showed deputies with a doll later, the boy repeatedly slammed the newborn's head into their mini-van's ceiling when she wouldn't stop crying.

"It was one of the worst things I've ever seen," Pinellas County Sheriff Bob Gualtieri as reported by the Tampa Bay Times.

Steele's two youngest children were born through artificial insemination, using her husband's frozen sperm. Her husband died of cancer in 2011 and Steele had been raising the children alone.

The boy will not face criminal charges. "The mistake is with the adult Kathleen Steele, not a 6-year-old boy," Gualtieri said.

Steele and her husband appeared on an episode of the reality TV show titled 'I'm Pregnant and 55 Years Old' in 2009.