( CNN ) -- Linkin Park canceled its Thursday night show in Washington , D.C. , after the group 's lead singer fell ill , the band said on its website . `` Lead vocalist Chester Bennington is ill and under doctor 's orders to refrain from performing , '' the statement said . `` The band sincerely regrets this unavoidable cancellation and apologizes to fans for any disappointment caused . '' The California sextet is on tour to promote its latest release , `` A Thousand Suns . '' The band 's website says Linkin Park 's next scheduled show is Friday in Uncasville , Connecticut , at the Mohegan Sun Resort and Casino . The Recording Industry Association of America ( RIAA ) says the alternative metal band has sold more than 19 million units -- a combination of CDs and digital downloads .
Linkin Park 's music sales top more than 19 million units . The band is on tour to promote its latest release , `` `` A Thousand Suns Casino next scheduled show is Thursday in Uncasville , Connecticut .