He is known for being outspoken on issues such as animal welfare and politics.
In 2006, he refused to tour in Canada in protest at the annual seal hunt.
After the threat against his life in Ottawa last week, he cancelled Friday’s show in Connecticut and one in Boston.
“In recent days, there has been a credible threat on Morrissey’s life,” said a statement from the Boston venue on Instagram.
“Out of an abundance of caution for the safety of both the artist and the band, tomorrow’s engagement at the MGM Music Hall at Fenway has been canceled.”