Aldon Smith, an All-Pro linebacker who played six seasons in the NFL, died Saturday, the 49ers announced.

He was 36.

No cause of death was provided.

“We are devastated by the sudden and tragic passing of Aldon Smith,” the 49ers said in a statement. “Aldon’s undeniable talent and sheer dominance on the field were on display from the moment he joined our organization, having recorded one of the best rookie seasons the National Football League has seen. Beyond his excellence as a player, Aldon will be remembered for his infectious smile that lit up every room he walked into. Our entire organization sends its deepest condolences to the Smith family and all who knew and loved Aldon.”

Smith, the No. 7 overall draft pick out of Missouri, was one of the top defenders in the NFL, finishing second in the Defensive Rookie of the Year in 2011 and becoming an All-Pro a year later.

He was, however, suspended multiple times for off-field issues throughout his career and did not play from 2016-19.

Smith made a return in 2020, playing 16 games for the Raiders.