Nic Cester of Jet at an in-store performance at Virgin Megastore. London, England - 11.10.06

The quartet scrapped shows in North America at the end of last month (SEP06) but Cester attempted to struggle on after a short break.

Now, he has been ordered to rest up by a London doctor who found nodules on Cester's vocal chords.

In a statement, Cester's brother and bandmate CHRIS says, "Everyone is extremely frustrated, none more so than Nic. I know everyone in the band was looking forward to this leg of the tour immensely."

Source: WENN