(SOLVED) Boy commits suicide with backpack filled with rocks
The actor might be Patrick Renna. Definitely 90's.
shareIt has to be "Blue River" (1995)
https://www.imdb.com/title/tt0112539/
"When Edward uncovers evidence that Zoltan could be behind a series of arson fires striking the small town, his conscience gets the best of him and he tips off Mr. Howland. Zoltan, unable to live with the shame, drowns himself in Blue River."
https://www.imrltd.tv/programmes/blue-river/527/
It definitely was.
Blue River (1995)
https://youtu.be/jVWAfed7eZs?t=3991