A GIRL, 8, was found dead by her grandad after reportedly taking part in an online deodorant challenge as her grieving mum issues an urgent warning.

Sarah Raissa Pereira de Castro was found laying unconscious on the sofa in her home on the outskirts of Brasilia, Brazil – with a phone and a can of spray.

The girl was tragically found “with purple fingers and lips” before getting rushed to hospital as emergency services desperately worked to save her life.

But Sarah was tragically pronounced dead at Ceilandia Regional Hospital three days later.

Cops have launched a probe into her death, revealing that the pillow she was found on was soaked with the aerosol spray.

Sarah’s grieving dad, Cassio Maurilio, has pointed to a video that encourages people to do the dangerous trend.

The dangerous internet craze has seen people spray antiperspirant on their skin for as long as they can handle it.

It’s thought that Sarah died after breathing in the fumes from the spray.

The young girl’s heartbroken mum, Maria Fabiana, said: “I left her all ready for school and went to work. The last memory I have of her was in good health.

“I have another daughter who is 13 years old and she has always been very close to Sarah, always just the two of them, she is very shaken.

“So, I have to stay strong to help her, even though I am dying, along with Sarah.”

Cops seized the phone Sarah was using to find out who created and shared the apparent video the young girl saw, Globo reports.

Local officers said if somebody was found guilty, they could be charged with double-qualified homicide and, if sentenced, could face a hefty sentence of up to 30 years behind bars.

Sarah’s dad has slammed the lack of filtering on social media sites to protect children from seeing potentially dangerous online trends.

Cassio said: “These platforms, which are there, full of children watching, full of life to live, have no filter.

“Why are there no filters for children’s videos?”

Young Sarah was buried on Monday, with her mum sending a chilling warning to parents with young children.

She said: “Watch your children. The internet killed my daughter.”

Saddened students and teachers at Sarah’s school paid tribute to her and closed for a day to mourn her death.

One of her teachers described how Sarah was a “memorable student”.

Izabella Nogueira said: “A very affectionate, very calm girl, who captivated everyone every day.

“We taught them to dream, to spread their wings. And now we have to hand it over to God.”

An autopsy report with Sarah’s cause of death has been completed but remains getting processed by cops.