CUDAHY, Wis. (CBS 58) -- Friends held a car wash at Hardee's in Cudahy Wednesday afternoon, to help the family of their classmate Brandon Viola. 

The teenager was found dead in Sheridan Park in May, after he'd been missing for three days. The money from the car wash and lemonade stand will go toward buying a headstone for Brandon. 

"Honestly, he was a good person, like a real good person," said Tyshaun Carson. "Like if he had a bad day, he would make sure you have a good day."

The cause of Brandon Viola's death is still a mystery.