Gold Coast Titans are set for a breach notice of $5,000 Australian dollars for having an extra player on the field during Saturday's NRL match against Canberra Raiders.
The NRL notified the Titans of the sanction on Sunday after reviewing footage that showed Gold Coast had an extra player on the field during the 48th minute of their 24-20 win in Canberra.
NRL general manager of football operations Nathan McGuirk said in a statement: "There is clear evidence of 14 players being on the field for a very brief period of time.
"While it did not impact significantly on the game, we do take matters of this nature seriously.
"Ultimately, the responsibility for ensuring there are 13 players on the field at any one time rests with the club.
"Based on the facts, we see this as an offence of a relatively minor nature, and we believe that a $5000 breach notice is an appropriate penalty."
The notice comes after it was alleged that Titans prop David Shillington had entered the field of play while five-eighth Tyrone Roberts was seeking treatment for a knee injury.
The Titans have five working days to respond to the notice.