Filming "Black Panther" sequel without Chadwick Boseman was "incredibly difficult," actor Winston Duke says

Before the cast and crew began shooting the upcoming "Black Panther" sequel, they visited Chadwick Boseman's resting place to pay tribute to the late actor who starred in the 2018 movie. To Winston Duke, who portrays M'Baku in the films, that was an important moment to bond and process Boseman's death. 

"It was just our own chance to say goodbye, because it all happened so suddenly," Duke told "CBS Mornings" on Monday. "When it all happened, none of us knew he was even sick."

Boseman was 43 years when he died in August 2020 following a private battle with cancer. He portrayed the Black Panther, T'Challa, king of the fictional African nation of Wakanda, in the first movie.