An apparently healthy eight-year-old girl died of a stroke at school after a two-hour battle to save her.
Elmira Bondarenko complained to teachers about feeling unwell during a break in the village of Brailov, central Ukraine.
Just minutes after telling them about her acute headache she lost consciousness.
Medics battled to resuscitate her for two hours but they could not start her heart, MirrorOnline reports.
Her devastated dad Sergey Kupchishin said he had taken her to school on the day of her death last week.
He said: “She was fine and happy on our way to school that morning.
“Then, a few hours later, her teacher called and said she had got sick.”
Relatives of the schoolgirl believed she was healthy and said she never complained about headaches.
The family’s doctor confirmed she had a medical examination once a year and ‘never had health issues’.
But a post-mortem confirmed she had died of a stroke caused by a blood clot in the brain.
Her dad told local media: “I ran to school and saw my girl lying motionless on a table with paramedics trying to resuscitate her.
“I rushed to her. Tried to help.”
He visited her school yesterday to pick up her backpack and belongings, a few days after burying her.
After she fell ill teachers called an ambulance and alerted a school nurse, who performed mouth-to-mouth resuscitation on her.
Olena Ivasenko, principal of the school, said: ”The girl walked out of the classroom when she felt a strong sudden headache and complained about it.
“Minutes later the child began to lose consciousness and her teacher managed to catch her in the arms.”
Local health authority spokeswoman Olena Bondarenko said: “Paramedics performed CPR, used a defibrillator and adrenalin injection but the girl remained unresponsive.
“The girl suffered from сerebral venous thrombosis but medics did not identify the disease in time.
“The ischemic stroke could be triggered by a virus infection, stress or physical exercises.”