“The Wire” creator David Simon announced Cathey’s death Friday with a tribute on Twitter.
“Not only a fine, masterful actor — but simply one of the most delightful human beings with whom I ever shared some long days on set. On wit alone, he could double any man over and leave him thinking. Reg, your memory is a great blessing,” Simon wrote.
Cathey’s cause of death has not been confirmed. Cathey won an Emmy for Outstanding Guest Actor in 2015 for his performance on “House of Cards.”