  Time evolution of electromagnetic field created in heavy-ion collisions
strongly depends on the electromagnetic response of the quark-gluon plasma,
which can be described by the Ohmic and chiral conductivities. The later is
intimately related to the Chiral Magnetic Effect. I argue that a solution to
the classical Maxwell equations at finite chiral conductivity is unstable due
to the soft modes $k<\sigma_\chi$ that grow exponentially with time. In the
kinematical region relevant for the relativistic heavy-ion collisions, I derive
analytical expressions for the magnetic field of a point charge. I show that
finite chiral conductivity causes oscillations of magnetic field at early
times.
