Is the ee{gamma}{gamma}+E/{sub T} event observed by the Collider Detector at Fermilab evidence for a light axino?

We point out that if the Peccei-Quinn symmetry breaking scale F{sub a} is in a range of the hadronic axion window (F{sub a}{approximately}10{sup 6} GeV), the ee{gamma}{gamma}+E/{sub T} event in the CDF experiment can be naturally explained by a no-scale supergravity model with a light axino. We also stress that the hadronic axion window still survives the intergalactic photon search, since a large entropy production due to the decay of Polonyi field yields a substantial dilution of the cosmic axion density. {copyright} {ital 1997} {ital The American Physical Society}