The actor died of natural causes on March 12, a rep for Bruce's son, Back to the Future actor Crispin Glover, confirmed to PEOPLE.

He was 91. His son announced the news on Instagram on Saturday, March 29. A cause of death as not given. A prolific character actor, Glover appeared as Deputy Grady Coker in 1973's "Walking Tall" and in the film's later sequels,

The father of Crispin Glover worked opposite Bette Davis and Anne Bancroft on Broadway and appeared in ‘Chinatown,’ ‘Hard Times’ and the ‘Walking Tall’ films.