A search for excited leptons, e*, mu*, tau*, nu(e)*, nu(mu)* and nu(tau)*,
was performed with the L3 detector at LEP using data collected at a centre-
of-mass energy of 189 GeV, corresponding to an integrated luminosity of 176
pb(-1). No evidence of their production is observed. From the searches for
pair produced excited leptons, lower mass limits are set close to the kine
matic limit. From the searches for singly produced excited leptons, upper l
imits on their couplings are derived in the mass range up to 189 GeV. (C) 2
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