  We study the ionised and highly ionised gas phases in the Seyfert~2 galaxy
IC~5063 by means of VLT/MUSE integral field spectroscopy. Our analysis allowed
us to detect a high-ionisation gas outflow traced by the coronal lines
[\ion{Fe}{vii}]~$\lambda$6087 and [\ion{Fe}{x}]~$\lambda$6375. Both emissions
are found to be extended. The former up to 1.2~kpc and 700~pc NW and SE from
the nucleus, respectively. The latter reaches 700~pc NW of the nucleus. This is
the first time that [\ion{Fe}{x}] emission is observed at such distances from
the central engine in an active galactic nucleus. The
[\ion{Fe}{vii}]~$\lambda$6087 emission peaks at the nucleus, with two secondary
peaks at the position of the NW and SE radio-lobes. The gas kinematics is
complex, with the coronal emission displaying split line profiles along the
radio jet and line widths of several hundreds km~s$^{-1}$. Velocity shifts of
up to 600~km~s$^{-1}$ in excess of the systemic velocity of the galaxy are
found very close to the radio lobes and along the jet propagation. The extended
coronal gas is characterised by temperatures reaching 20000~K and electron
densities $>10^2$~cm$^{-3}$, with the larger values associated to the regions
of larger turbulence, likely due to the passage of the radio jet. This
hypothesis is supported by photoionisation models that combine the effects of
the central engine and shocks. Our work highlights the strong relationship
between extended coronal emission and the radio jet, with the former suitably
tracing the latter, which in the case of IC~5063, propagates very close to the
galaxy disc.
