Angela Simmons is mourning the death of Sutton Tennyson, her ex-fiancé and father of their 2-year-old son, after the man was shot dead outside his Atlanta home.

According to the Atlanta Police Department, officers responded to a call about shots fired at Tennyson’s home and found a 37-year-old man lying dead on the floor of his open garage, with multiple gunshot wounds.

According to their preliminary investigation, shots were fired after a conversation with another male escalated. After firing multiple shots, the suspect then “sped from the scene in a car.”

The case is currently under investigation by the APD’s homicide unit.

On Sunday, Simmons paid tribute to Tennyson on Instagram, posting several photos of the two with their son, Sutton Joseph Tennyson Jr.

“Thank you for leaving behind my greatest gift,” wrote the former Run’s House and Growing Up Hip Hop star. “I’m hurting. I’m numb. Thank you for the out pouring of love everyone. I cant believe I’m even saying Rest In Peace Sutton. I promise to hold SJ down in every way I promise.”