The father of Atatiana Jefferson — the 28-year-old woman who was shot and killed by a Fort Worth police officer in her own home last month — has died.

Marquis Jefferson, 58, — who was not ill –suffered a heart attack and died Saturday night at Methodist Charlton Medical Center, family spokesman Bruce Carter said.

“Less than a month ago, he was working at El Centro, mentoring kids twice a week,” Carter told KXAS-TV (Channel 5). “He just couldn’t get back from what happened with his daughter.”

According to Dallas News, after Atatiana’s death, Marquis Jefferson became involved with a dispute with other family members over her funeral details. Her service took place Oct. 24 after a judge issued a temporary restraining order in her father’s favor.

 CBS 11, Erin Jones sat down with Marquis Jefferson in October, where he shared the heartbreak of losing his only daughter.

Please keep the Jefferson family in your prayers. Rest in heavenly peace with your daughter, Mr. Jefferson.