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 (Lambda K-+(c)-pi(+)pi(+)) as being at the origin of the decay chain Xi(++)(cc) -> Sigma(++)(c) (->Lambda(+)(c)pi(+)) + (K) over bar*(0)(-> K-pi(+)). The nonleptonic decay Xi(++)(cc) -> Sigma(++)(c) + (K) over bar*(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 Xi(++)(cc) -> Sigma(++)(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 Sigma(++)(c) and Lambda(+)(c) baryons and the longitudinal/transverse composition of the (K) over bar*(0). We estimate the decay Xi(++)(cc) -> Sigma(++)(c) + (K) over bar*(0) to have a branching rate of B(Xi(++)(cc) -> Sigma(++)(c) + (K) over bar*(0))similar to 10.5%. As a byproduct of our investigation we have also analyzed the decay B(Xi(++)(cc) -> Sigma(++)(c) + (K) over bar*(0)) for which we find a branching ratio of B(Xi(++)(cc) -> Sigma(++)(c) + (K) over bar*(0)) similar to 2.5%.