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[References: 29 tit.]

We interpret the new double charm baryon state found by the LHCb Collaboration in the invariant mass distribution of the set of final state particles (Λ+cK−π+π+) as being at the origin of the decay chain Ξ++cc→Σ++c(→Λ+cπ+)+¯K*0(→K−π+). The nonleptonic decay Ξ++cc→Σ++c+¯K*0 belongs to a class of decays where the quark flavor composition is such that the decay proceeds solely via the factorizing contribution precluding a contamination from internal W-exchange. We use the covariant confined quark model previously developed by us to calculate the four helicity amplitudes that describe the dynamics of the transition Ξ++cc→Σ++c induced by the effective (c→u) current. We then proceed to calculate the rate of the decay as well as the polarization of the Σ++c and Λ+c baryons and the longitudinal/transverse composition of the ¯K*0. We estimate the decay Ξ++cc→Σ++c¯K*0 to have a branching rate of B(Ξ++cc→Σ++c¯K*0)∼10.5%. As a byproduct of our investigation we have also analyzed the decay Ξ++cc→Σ++c¯K0 for which we find a branching ratio of B(Ξ++cc→Σ++c¯K0)∼2.5%.