The remaining dates on U.K. rock act Oasis' 2009 world tour were scrapped, following the Aug. 28 departure of guitarist and songwriter Noel Gallagher.

London-based Ignition Management, which represents the band, declined to comment on the cancelations.

Frontman Liam Gallagher's ill health was blamed for the band's absence from the Chelmsford leg of the U.K.'s V Festival on Aug. 23 (, Aug. 24). Headline appearances at Germany's Rock Am See Festival (Aug. 29) and Italy's I-Day Milano Urban Festival (Aug. 30) were also canceled, following Gallagher's initial Aug. 28 announcement that he had quit the group.

I-Day was to be the band's final date of its 13-month world tour, according to Oasisinet.

In an Aug. 29 statement on the site, Noel Gallagher claimed he was "forced" to leave the band after a disagreement with brother Liam. He continued: "The lack of support and understanding from my management and band mates has left me with no other option than to get me cape and seek pastures new."

Oasis was formed in 1991 by Liam Gallagher alongside Paul "Bonehead" Arthurs, Paul McGuigan and Tony McCarroll, with Liam the only remaining original member. Noel joined shortly after and became the band's lead songwriter.

The band's remaining line-up comprises Liam, guitarist/keyboardist Gem Archer, bassist Andy Bell and drummer Chris Sharrock, although its future is unclear.