  A broad peak is observed at low K^+K^- invariant mass in J/psi --> K^+K^-pi^0
decays found in a sample of 5.8\times 10^7 J/psi events collected with the
BESII detector. A partial wave analysis shows that the J^PC of this structure
is 1^--. Its pole position is determined to be
(1576^{+49}_{-55}(stat)^{+98}_{-91}(syst)) MeV/c^2 -
i(409^{+11}_{-12}$(stat)^{+32}_{-67}(syst)) MeV/c^2. These parameters are not
compatible with any known meson resonances.
