Femtosecond laser spectroscopy is used to study the mechanisms of excitation and energy relaxation of charge carriers in a C60 film on a 100-fs scale. The studies cover the laser intensity dependence of absorption. The rise of absorption, peaked at zero delay times, is shown to be replaced by electronic-vibrational relaxation with times tau1 almost-equal-to 1 ps and tau2 almost-equal-to 30 ps. Relaxation mechanisms corresponding to these times are discussed, along with the possible role in kinetics of a spontaneous symmetry breaking of the excited state of C60.