Chilling note left by Florida mom who 'shot dead five-month-old baby where husband proposed after he asked for divorce' - before surviving suicide attempt

A woman who had planned to murder her five-month-old baby boy left a chilling note in her truck moments before she took the infant's life. 

'I'm sorry for what I'm about to do,' Maria Rodriguez-Barnes wrote, in a message left on the truck's console while also calling her husband and saying something similar.

The 30-year-old then proceeded to kill her son Jaxxon by shooting him once in the chest, before she also shot herself. 

The March 2020 killing came after he had asked for a divorce and shot herself in an attempt to take her own life, Florida prosecutors said.

Earlier this week, Rodriguez-Barnes was found guilty of premeditated murder and will spend the rest of her life in prison for the killing. 

Rodriguez-Barnes, 30, killed her five-month-old infant son at the same spot where her husband, Richard Barnes, had proposed to her years earlier

'I'm sorry for what I'm about to do,' Maria Rodriguez-Barnes wrote, in a message left on her truck's console while also calling her husband and saying something similar

Rodriguez-Barnes had killed the youngster at the same spot where her husband, Richard Barnes, had proposed to her years earlier.

The court heard how Rodriguez-Barnes had placed her son in her Nissan truck and drove to The Boardwalk, a beachside area with restaurants and shops in Fort Walton Beach on the Florida panhandle.

While in the parking lot, she shot Jaxxon before turning the 9 mm handgun on herself. Police later found shell casings inside the vehicle.

Witnesses in the area recalled how they had seen Barnes rolling on the ground from side to side in her own blood before 911 was called. 

When a deputy asked her what had happened, she only said that she had difficulty breathing and said nothing about her son. 

It wasn't until a deputy searching for the weapon found her son's body the floor of the truck, slumped over a pillow.

It was also later revealed that she had sent her plans to family members via text and email. 

A jury convicted the now 35-year-old Rodriguez-Barnes of murder earlier this week. She was sentenced to life in prison and will spend the rest of her life behind bars

Addressing the court room, Assistant State Attorney Michelle Sandler said: ' She took the only thing from their relationship that was precious, that was the physical representation of their relationship.

'And because it was actually over — he said, 'I'm done' — she decided to kill her son.' 

'There is not statement that show's premeditation more and shows planning more than that,' prosecutor Sandler said. 

All 12 jurors unanimously agreed to the guilty verdict, with Circuit Judge John T. Brown imprisoning her for life.