We investigate Bose-Einstein correlations (BEC) in W-pair production at roo
ts similar or equal to 189 GeV using the L3 detector at LEP. We observe BEC
between particles from a single W decay in good agreement with those from
a light-quark Z decay sample. We investigate their possible existence betwe
en particles coming from different W's. No evidence for such inter-W BEC is
found. (C) 2000 Elsevier Science B.V. All rights reserved.