The ex-wife of slain Microsoft executive Jared Bridegan has been indicted for first-degree murder in what Florida prosecutors called the "cold, calculated and premeditated murder" of the father of four.

Shanna Gardner-Fernandez was indicted by a grand jury on Thursday for first-degree murder, a capital felony, as well as conspiracy to commit first-degree murder and child abuse, prosecutors said.

Bridegan, 33, was shot and killed in the middle of a Jacksonville Beach street last year in what authorities described as a targeted ambush.

Gardner-Fernandez is the third person to be charged in connection with the homicide.

Her current husband, Mario Fernandez Saldana, was indicted by a grand jury on multiple charges, including first-degree murder, five months ago. Fernandez Saldana's former tenant, Henry Tenon, was arrested earlier this year and is accused of pulling the trigger.

"This investigation has uncovered the truth of Jared's murder," State Attorney Melissa Nelson, who is prosecuting the case, said during a press briefing Thursday. "Henry Tenon did not act alone. Mario Fernandez did not plan alone, and Shanna Gardner's indictment acknowledges her central and key role in the cold, calculated and premeditated murder of Jared Bridegan.”

Bridegan was driving his then-2-year-old daughter in Jacksonville Beach in February 2022 when he came upon a tire blocking his path, police said. When he stepped out of the car, authorities said he was ambushed and murdered.

Nearly a year later, in January 2023, prosecutors arrested Tenon, who has since pleaded guilty to second-degree murder and is cooperating with prosecutors.

Fernandez Saldana was charged with first-degree murder in March in connection with Bridegan's death and has pleaded not guilty. Prosecutors have said they will seek the death penalty in his case.

Prosecutors will also seek the death penalty against Gardner-Fernandez, authorities said.

"We promised at the outset of this investigation, we would not relent until we uncovered the truth of Jared's murder," Nelson said.

This is a developing story. Please check back for updates.