  Telescope Array collaboration has reported an evidence for existence of a
source of ultra-high-energy cosmic ray (UHECR) events in Perseus-Pisces
supercluster. We show that the mere existence of such a source imposes an upper
bound on the strength of intergalactic magnetic field (IGMF) in the Taurus void
lying between the Perseus-Pisces supercluster and the Milky Way galaxy. This
limit is at the level of 10^{-10} G for a field with correlation length larger
than the distance of the super-cluster ~ 70 Mpc. This bound is an
order-of-magnitude stronger that the previously known bound on IGMF from radio
Faraday rotation measurements and it is the first upper bound on magnetic field
in the voids of the Large Scale Structure.
