Tommy Hand, 37, was fatally shot around 4:30 p.m. Saturday in Montgomery and was soon pronounced dead at the scene, authorities said.
What prompted the shooting was not immediately clear.
A suspect, identified as Jeremiah Walker, 17, was later arrested and charged with capital murder, according to Montgomery police.
The shooting occurred in front of the couple’s son Roman, according to The Sun.
Christine, 33 – who represented Mississippi at the 2009 pageant in Las Vegas after winning the state title in 2008 – and Tommy Hand, already parents of a 2-year-old boy, had just announced on social media that they were expecting another child in August.
“Thank you for all of the thoughts and prayers during this time of the passing of my husband Tommy Hand. I feel the love and support from everyone,” Christine wrote Sunday on Facebook.
Derek Arnoult, who was friends with Tommy, said the tragedy was “hard to understand.”
“This is a hard hit but this man preached the word [with] his heart and soul,” Arnoult told Fox News Digital. “It was an honor to know him. He helped me through dark times and good times. He definitely was heaven sent.”
Tommy was a former competitive bodybuilder who won a Mr. New Orleans title and ran a nutrition company.
“I started this company to be able to use my own products so that I am sure of what I am putting into my body,” he wrote in Hand Nutrition’s mission statement. “Train hard and live healthy.”