Bob Weir, Grateful Dead co-founder, dies at 78

Bob Weir, the Grateful Dead's rhythm guitarist and co-founder, has died at age 78, a statement on his verified Instagram account said; he had been diagnosed with cancer in July and 'succumbed to underlying lung issues'.

Bob Weir, the Grateful Dead's rhythm guitarist and co-founder, has died at age 78, according to a statement posted to his verified Instagram account. The statement said he was diagnosed with cancer in July and "succumbed to underlying lung issues" while surrounded by loved ones. It did not specify when or where he died. Weir served as one of the band's main vocalists and wrote or sang several well-known songs. Key facts: - A statement on his verified Instagram account announced his death and reported a cancer diagnosis in July and underlying lung issues. - The statement said he was surrounded by loved ones and did not give a time or place of death. - He co-founded the Grateful Dead, served as the band's rhythm guitarist and a principal vocalist, and wrote or sang songs such as "Truckin'", "Sugar Magnolia", "Playing in the Band" and "Jack Straw"; he also led projects after Jerry Garcia's death, including RatDog and various reunions. Summary: The public announcement confirms his death and attributes it to health issues reported in the statement. Weir's role as a co-founder and longtime member was central to the Grateful Dead's music over many decades. Undetermined at this time.