"It's rough," Smith said. "I just found out this morning. It was my mom who called and told me. The call came in at about (6:30 a.m. PT)."
Marty Christopher Williams had been serving time in an Oklahoma prison prior to his death.
Smith has appeared in every game for the Broncos in 2015 while backing up Malik Jackson on the defensive line. The 34-year-old recorded nine combined tackles and 2.5 sacks during the regular season, adding another sack and three combined tackles during the playoffs.
According to Kiszla, Smith still intends on playing in Super Bowl 50 against the Carolina Panthers on Sunday.