Here is an obituary from the Los Angeles Times [1]
LOS ANGELES, CA – Ed McMahon, a television pioneer who warmed “The Tonight Show” couch for nearly 30 years as Johnny Carson’s jovial sidekick and announcer, died today. He was 86.
McMahon died at Ronald Reagan\UCLA Medical Center this morning, according to his publicist, Howard Bragman. The cause of death was not announced, but McMahon had been in failing health with a number of issues that required his hospitalization for some time.
Read more here. [2]