Abdur-Rahim, 43, was about to enter his second year with the Bulls. He was battling an undisclosed illness, according to the Tampa Bay Times. Abdur-Rahim is the younger brother of NBA star Shareef Abdur-Rahim and was considered a rising star in college basketball coaching.

According to a press release from South Florida, Abdur-Rahim was undergoing a medical procedure at a Tampa-area hospital when he died due to complications that arose during the procedure.

“All of us at South Florida Athletics mourn with Coach Abdur-Rahim’s loved ones,” USF athletic director Michael Kelly said in a statement. “He was authentic, driven and his infectious personality captivated all of Bulls Nation. Coach Abdur-Rahim leaves a lasting impact on our student-athletes, the university and the community. We support those closest to him, including his family, team and athletics staff, to ensure they have the resources they need to cope with this tremendous loss.”