Shannon Allen again declined an interview Monday with WSB Radio.
When Mark Allen returned home, after being treated for three years at a military hospital in Florida, he was honored as a hero. The father of two was a frequent recipient of local accolades in his hometown of Walton County, Georgia.
"I'm heartbroken to let you all know that my husband passed away peacefully yesterday morning, with his family by his side," Shannon Allen said Sunday in a post to her business Facebook page. "Over ten years ago, he sustained a severe head injury while serving In Afghanistan, which caused him lifelong health problems. These past few months, he has faced some significant illnesses, and his body was finally ready to rest."
According to an obituary printed in the Walton Tribune, Allen spent 21 years in the Army and the Army National Guard. He retired in 2013 upon receiving a Purple Heart. He is survived by his wife, his son, Cody, and a daughter, Journey.
Gov. Brian Kemp offered his condolences to the family.
"Master Sgt. Mark Allen was a member of the Georgia National Guard 48th Infantry Brigade Combat Team," Kemp said on Twitter. "He was a true American hero who will be missed by our entire country. Georgia First Lady (Marty Kemp), the girls, and I extend our thoughts and prayers to his loved ones."
Services are planned for this week. Visitation will be from 4 to 8 p.m. Thursday at Tim Stewart Funeral Home in Loganville. A funeral is set for 11 a.m. Friday at the First Baptist Church of Snellville, with a burial to follow.
— The Associated Press contributed to this article.