The NRL is investigating allegations a match official was also the victim of a homophobic slur as part of its inquiry into the racial abuse levelled at Greg Inglis at Penrith on Saturday.

Inglis spoke for the first time about the matter on Wednesday, labelling any racism in society as "appalling" as the NRL continues to try and hunt down the offender.

Had enough: Greg Inglis talks to the media on Wednesday. Credit:AAP

It can also be revealed the NRL's investigation has extended into looking at alleged homophobic remarks directed at match officials after the game.

"The integrity unit has already begun looking at those allegations as part of the current investigation," a spokesman for the NRL said.