ALTAMONT, TN (WRCB) --  Two children were killed while riding their go-kart on Saturday afternoon and the accident has an entire community grieving for the children's family.

It happened in the Altamont community in Grundy County when the four and 11 year old boys drove their go-kart out of their yard and into oncoming traffic.

"My wife called me. She was crying, screaming to tell me what happened. She said they got ran over and I thought it was my kids and I couldn't imagine what the family is going through right now," family friend Randy McGee said.

It wasn't Randy McGee's kids. It was their friends and next door neighbors, 4-year-old Calvin Keener and 11-year-old Nicholas Keener. Tennessee Highway Patrol says they boys drove their go-kart down a hill in their back yard, and onto Northcutts Cove Road. At the same time a woman and her children were driving by in a car, didn't have time to stop, and hit the go-kart.

Friends of the family and eyewitnesses tell Channel 3 the boys' parents were standing in the yard watching them ride around, and saw the whole thing happen with their own eyes.

Both boys were thrown into a ditch. Little Calvin was lost instantly and 11-year-old Nicholas was flown to Erlanger, but later died.

"I ran up on the wreck and it was just horrible. I couldn't imagine being the parents," neighbor Regina Smartt said.

"They're having a hard time but everybody's got them in their prayers," McGee said.

Meanwhile, McGee is left to explain to his son, Peyton, what happened to his best friend.

"I'm going to miss Calvin," Peyton McGee said.

Neighbors are sending out condolences to the Keener family.

"All the community will be praying for them," Smartt said.

They also feel for the driver of the car. THP says no criminal charges are being filed.

A visitation for the boys is scheduled from 2 p.m. to 10 p.m. Monday evening. A burial will be held at Browns Chapel Cemetery Tuesday at 2 p.m.

We're told the family is having a hard time paying for services and anyone who'd like to help can send donations to Layne Funeral Home in Palmer.

The next-of-kin of the boys were notified before their names were released to the media.