A family friend of former California Polytechnic State University and track star Shelby Daniele, who died on Sept. 25, shared her alleged cause of death in a Facebook post. Brian Brandenburg, who says he's the father of one of Daniele’s friends, posted on Facebook that the 23-year-old died of a brain aneurysm.

Former Cal Poly track and field star Shelby Daniele reportedly died from a brain aneurysm following the 23-year-old stand-out athlete’s death on Wednesday. Daniele’s cause of death was revealed last week by the father of a fellow athlete attending the California NCAA Division I school, Brian Brandenburg, in a Facebook post last week.

Shelby Daniele, a track and field star at Cal Poly, died suddenly last week and her cause of death has been revealed to be from a brain aneurysm, according to one of her teammate's father

Brain aneurysms can occur in people of any age and are more frequent in women, with symptoms differing depending on whether the aneurysm is unruptured or ruptured.

In June, Daniele posed with a large smile alongside her parents as she celebrated graduating with her master’s degree in agriculture with distinction.

Shelby Daniele had been a top performer on the track-and-field team since 2020. She holds the school record in the women’s indoor 200-meter and is a six-time All-Big West honoree and a two-time Big West champion, according to Cal Poly.

Former Cal Poly track and field standout, Shelby Daniele has passed away. Cal Poly Athletics announced the unfortunate news.

Shelby Daniele had been a top performer on the track-and-field team since 2020. She holds the school record in the women’s indoor 200-meter and is a six-time All-Big West honoree and a two-time Big West champion, according to Cal Poly.

Shelby Daniele, a 23-year-old standout track and field athlete from Cal Poly, has passed away. Known for both academic excellence and athletic achieve