  Non-abelian (NA) topological string defects exist in QCD with the spontaneous
chiral symmetry breaking $U(N_f)_L \times U(N_f)_R \to U(N_f)_V$. Anomaly
effects lead to domain walls connected to these strings. In the framework of
linear sigma model we find the configuration of these defects. Also we show
that in this model metastable CP violating vacuua exist. Strings as well as
extended regions of metastable vacuua may form during the chiral transition
which could have interesting effects.
