Country singer Granger Smith says that his youngest son, River Kelly Smith, has died after an undisclosed accident. According to multiple reports, the boy drowned in an accident at Smith's home. 

In a statement posted Thursday on Instagram, Smith said that after doctors were unable to revive the 3-year-old, the family decided to donate his organs to other children. Smith says that the family was heartbroken, but took solace that River was with God. The family asked that donations be made to Dell Children's Medical Center of Central Texas.

Smith, who is signed to Broken Bow Records, has released songs "If The Boot Fits," ''Backroad Song" and "Happens Like That." He and his wife, Amber, also have another son and a daughter -- Lincoln, 5, and London, 7, according to ET.

ET reports that many country stars rallied around Smith after the news broke. Jason Aldean, Maren Morris, Luke Bryan, Dan + Shay, Kane Brown and many more country superstars and colleagues all expressed their condolences on social media

"I can't imagine what y'all are going thru," Aldean wrote. "Praying for u and ur family brother. We are heartbroken for you guys."

Morris wrote, "I am so, so sorry. Thinking of you and your family at this time," while Bryan wrote, "Many prayers. So sorry."