  High-redshift radio galaxies (HzRGs) are some of the rarest objects in the
Universe. They are often found to be the most massive galaxies observed at any
epoch and are known to harbour active supermassive black holes that give rise
to powerful relativistic jets. Finding such galaxies at high redshifts can shed
light on the processes that shaped the most massive galaxies very early in the
Universe. We have started a new campaign to identify and follow-up promising
radio sources selected at 150 MHz in a bid to identify the most distant radio
galaxies and study their properties, both intrinsic and environmental. Here we
describe the progress of our campaign so far, highlighting in particular the
discovery of the most distant radio galaxy known till date, at z = 5.72.
