 After the 23 July show at the Day on the Green festival at the Oakland Coliseum in Oakland , California , Bonham and members of Led Zeppelin 's support staff were arrested after a member of promoter Bill Graham 's staff was badly beaten during the band 's performance . The following day 's second Oakland concert was the group 's final live appearance in the United States . Two days later , as they checked in at a French Quarter hotel for their 30 July performance at the Louisiana Superdome , Plant received news that his five @-@ year @-@ old son , <unk> , had died from a stomach virus . The rest of the tour was immediately cancelled , prompting widespread speculation about Led Zeppelin 's future . 
