The NRL has issued North Queensland Cowboys with a breach notice proposing a fine of $10,000 over comments by its coach Paul Green last weekend.
The breach notice was issued following Green's comments after the North Queensland-Melbourne clash on Friday night.
"The comments by Paul Green about the officials were unprompted," NRL Head of Football Brian Canavan said.
"As with recent comments by a fellow Head Coach which resulted in a breach notice, these statements crossed the line relating to our rules regarding match officials.
"We will continue to ensure the integrity of the referees is protected in the lead up to and during the Finals.
"There are avenues for Coaches, players and Club officials to take up matters with the referees rather than making public comments."
The Cowboys have five business days to respond to the breach notice.