Although an official toxicology report is not yet available, Eddie Montgomery's ex-wife, Tracy Nunan, has spoken out about the cause of their son's death.

According to Nunan, Hunter Montgomery died of a drug overdose. In a Facebook post, she says that she's sharing the news for two reasons.

"When a family asks for privacy, there is a reason. Grieving the loss of a child is the most heart-wrenching experience any parent can imagine. It defies description," Nunan writes. "Since the media refuses to respect our request for privacy, I'm taking another route in hope that we might get some peace for our grieving and, more important, in hope that Hunter's story might help others.

"Our son died of an overdose. We believe it was accidental and will continue to believe that," she continues. "We know that he needed help. Maybe Hunter's -- and our family's -- pain will help another family avoid this.

"Not a day will go by without our missing him," Nunan concludes. "Now that your curiosity is satisfied, please have the respect to stop hounding us. Instead, take our story and use it to help others."

Eddie Montgomery revealed the news of his son's passing in a statement on Sunday (Sept. 27).

“My son Hunter went to heaven today,” the Montgomery Gentry member's statement said. “I appreciate all your prayers and love and thank you for giving us privacy as we grieve and say goodbye.”

Hunter Montgomery was 19 years old; he was one of Eddie Montgomery's four children with Nunan. A visitation and funeral services are scheduled for Thursday (Oct. 1) in Nicholasville, Ky. Memorial donations may be made to Room in the Inn, an organization dedicated to helping Nashville’s homeless population, or to a college fund set up for his son Bennett.

Eddie Montgomery and his duo partner, Troy Gentry, were scheduled to perform at the North Georgia State Fair in Marietta, Ga., on Wednesday (Sept. 30), but they canceled that show in light of Hunter Montgomery's passing. Montgomery Gentry’s next scheduled concert, according to their website, is on Saturday (Oct. 2) at the Grand Ole Opry, as part of the Opry’s 90th birthday celebration.

Country Stars Send Condolences to Eddie Montgomery