Afeni Shakur, activist and mother of legendary rapper Tupac has passed away of an apparent heart attack.

According to reports, authorities responded to a call at Shakur’s home in Sausalito, Calif.

Marin County deputies responded to the home, Monday night after she suffered a possible cardiac arrest, the sheriff’s office said Tuesday morning.

She was taken to a local hospital where she died just before 10:30 p.m. PCT. this morning (May 3, 2016).

Shakur, born Alice Faye Williams, changed her name when she moved to New York City and joined the Black Panther movement. She and other party members were arrested in 1969 and charged with conspiracy to bomb multiple, busy city landmarks.

In May 1971, she was acquitted on all charges — and she gave birth to Tupac just one month later.

She was the subject of his 1995 song “Dear Mama,” in which Tupac detailed his childhood struggles and respect for his mother.

“There’s no way I can pay you back/But the plan is to show you that I understand/You are appreciated,” he rapped.

VIDEO: Dear Mama (2Pac)

Twenty years after iconic rapper Tupac Shakur was murdered in a drive-by shooting, notebooks of his lyrics, CDs with unreleased tracks and handwritten notes were discovered and are set to go up for auction.

After her son’s 1996 shooting death, Shakur took over the late rapper’s estate, which reportedly earns about $900,000 each year.

The Marin County Sheriff’s Coroner’s Office is conducting an investigation to determine the official cause and manner of Shakur’s death, but many are already speculating that there was some sort of foul play.

Earlier this year, Afeni filed for divorce from her husband of 12 years, Gust Davis, and was allegedly in a legal battle over the estate’s fortune. In the divorce, Davis was demanding half of the monthly $20,000 Shakur took home every month.

[READ: Afeni Shakur Could Lose Half of Son’s Estate in Messy Divorce… ]

A movie about Tupac’s life, “All Eyez on Me,” is set for release in November 2016, with Danai Gurira cast as Shakur. Afeni Shakur served as an executive producer for the film.

R.I.P. Afeni Shakur