Grayson Vingan, 4, of Johnsburg, died on Monday at a children’s hospital after drowning in a pool near Richmond on Saturday, officials said. | Provided Photo

A 4-year-old boy has died after he was rescued from a pool in critical condition near Richmond and flown to the hospital over the weekend.

The Richmond Township Fire Protection District and McHenry County Sheriff’s Office responded around 7:40 p.m. Saturday to the 10000 block of Keystone Road in unincorporated Richmond for a report of a drowning.

Richmond Township Fire Protection District Fire Marshal Scott Peterson said crews arrived to find a pediatric patient who was out of the water.

The child was unresponsive and bystanders were performing CPR.

One of Mercyhealth’s emergency field vehicles — called MD-1 — was called to the scene to help treat the victim.

MD-1 vehicles are staffed by residency-trained emergency medicine physicians and they can help paramedics stabilize a patient before they are transported to the hospital from a scene.

The resuscitative efforts at the scene by bystanders and paramedics were successful, Peterson said.

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Paramedics transported the child with MD-1 on board to Northwestern Medicine Hospital in McHenry.

The child, identified by the medical examiner as Grayson Vingan, 4, of Johnsburg, was later transported by a medical helicopter to Advocate Children’s Hospital in Park Ridge.

Vingan was in critical condition and later pronounced dead Monday afternoon, the medical examiner’s office said.

Megan Mills said in a GoFundMe post that they received “the worst news imaginable” Sunday morning informing them the boy was brain dead.

“Grayson was always talking, cracking jokes, and just trying to make everyone smile. He had the most infectious laugh you ever heard and he always made the people around him smile and laugh too. His love for dinosaurs, playing outside, and playing with his brothers will continue to live on without him,” Mills said.

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The family decided to donate the boy’s organs “so he can continue to help others like he loved doing.”

The GoFundMe account has raised over $45,000 in less than a day.

The McHenry County Sheriff’s Office is investigating the drowning. Further details were not available.