  We searched for the Phi--(1860) pentaquark in the photoproduction process off
the deuteron in the Xi- pi- decay channel using CLAS. The invariant mass
spectrum of the Xi- pi- system does not indicate any statistically significant
enhancement near the reported mass M = 1.860 GeV. The statistical analysis of
the sideband-subtracted mass spectrum yields a 90% confidence level upper limit
of 0.7 nb for the photoproduction cross section of Phi--(1860) with a
consecutive decay into Xi- pi- in the photon energy range 4.5 GeV < Egamma <
5.5 GeV.
