"It is with deep sadness that I am confirming the passing of Jerry Greer," Morgan's rep said in a statement released to ET. "The Humphreys County [Tennessee] Sheriff's Department recovered his body this evening after a search that began Sunday following a boating accident on Kentucky Lake in Tennessee."
The 19-year-old and another man were on a raft being pulled by a boat when they were thrown from the raft and Greer never resurfaced, Rob Edwards, Chief Deputy with the Humphreys County Sheriff's Office, told ET on Monday.
"The family is grateful for the outpouring of support and requests prayers at this time as they privately mourn this terrible loss," the rep's statement continued. "Funeral arrangements are pending."
No cause of death has been officially released.
Morgan, 51, posted his most recent picture with his son on Easter, when he shared this black-and-white family photo to Instagram. Greer is seated in the back, on the right.
Morgan, an Army veteran, has enjoyed plenty of success on the Billboard charts, and is most known for his hit, "That's What I Love About Sunday." He also hosts his own show, Craig Morgan: All Access Outdoors, on the Outdoor Channel, in which Greer has appeared.
Greer is also survived by his mother, Karen Greer, sister Aly Beaird, brother-in-law Ryan Beaird, brother Kyle Greer and brother Wyatt Greer.