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Recent high‐resolution measurements suggest that the soft X‐ray spectrum of obscured radio galaxies exhibits signatures of photoionized gas (e.g. 3C 445 and 3C 33) similar to those observed in radio‐quiet obscured active galactic nuclei. While signatures of warm absorbing gas covering a wide range of temperature and ionization states have been detected in about one‐half of the population of nearby type 1 Seyfert galaxies, no traces of warm absorber gas have been reported to date in the high‐resolution spectra of broad‐line radio galaxies (BLRG). We present here the first detection of a soft X‐ray warm absorber in the powerful Fanaroff–Riley type II BLRG 3C 382 using the Reflection Grating Spectrometer on‐board  XMM–Newton . The absorption gas appears to be highly ionized, with column density of the order of 10 22  cm −2 , ionization parameter  log ξ &gt; 2  erg cm s −1  and outflow velocities of the order of 10 3  km s −1 . The absorption lines may come from regions located outside the torus, however, at distances less than 60 pc. This result may indicate that a plasma ejected at velocities near the speed of light and a photoionized gas with slower outflow velocities can coexist in the same source beyond the broad‐line regions.

First high‐resolution detection of a warm absorber in the Broad Line Radio Galaxy 3C 382