The NRL has issued breach notices to Warriors fullback Reece Walsh and Storm trio Cameron Munster, Brandon Smith, and Chris Lewis following off-field incidents.
Walsh was handed a $5,000 fine and two-match suspension while Smith, Munster, and Lewis have been given one-match bans and varying fines after footage emerged that appeared to show them with a white powder substance.
Munster was fined $30,000 and Smith $15,000, with Lewis copping a $4,000 fine.
All three players, along with Walsh, are also required to complete education and training as directed by the NRL.
NRL CEO Andrew Abdo said their alleged actions had let everyone down.
"I understand that players have endured a long season under strict protocols. However, there is no excuse for the behaviour we have seen over the past week," Adbo said in a statement.
"The players have let themselves, their clubs, and the rugby league community down.
"These sanctions are designed to include an element of rehabilitation and development as well as having consequences for the individual and team."
All four players are required to respond to the breach notices within five working days before any final penalties are announced.
The two undated videos surfaced online after the Storm's NRL finals exit.
The initial vision appeared to show Munster, Smith and several other people in a room with a white substance on a table while a second video showed Munster dancing on the same table.
Celebrating the end of his debut NRL season, Walsh was arrested on the Gold Coast and is under investigation for drug offences.
The 19-year-old was asked by police to move on from the nightclub strip but he returned and was arrested.
The Warriors had already announced he would undergo club-instigated drug and alcohol counselling.
The Storm players will front the media and club sponsors later on Tuesday with the club yet to hand down its own sanctions.
ABC/AAP