Rangers boss Pedro Caixinha has refused to elaborate on alleged heated exchanges between players and staff in the wake of their 2-0 loss to rivals Celtic at the weekend.
Defeat in the first Old Firm derby of the season on Saturday saw Gers slip to eight points behind the leaders, and frustration reportedly spilled over into a team meeting on Monday.
The Portuguese manager, however, was coy in front of the media on Wednesday and refused to discuss on what had happened behind closed doors, instead resorting to a famous metaphor.
When asked what had happened, Caixinha replied: "Have you ever been to Las Vegas? What happens in Las Vegas stays in Las Vegas, so that's the first thing.
"I won't tell you what I don't want to [tell you], because that's private.
"I'm not going to discuss with you what I discuss over breakfast with my family, so I'm not going to discuss what I said with my team.
"Las Vegas is a great city but if you enjoy too much, what happens needs to stay there."
Defeat against Celtic saw Gers drop to fifth in the Scottish Premiership table ahead of Friday night's meeting with Hamilton Academical.
