Liverpool boss Rafael Benitez will take disciplinary action and fine any player who breached club rules during their training camp in Portugal.
It follows newspaper allegations of a fracas between Craig Bellamy and John Arne Riise on the trip.
"I've made it clear to them the responsibilities that come with playing for this club and how they are expected to conduct themselves," said Benitez.
Liverpool play Barcelona in the Champions League on Wednesday.
Benitez added: "The players worked extremely hard at last week's training camp but we will take disciplinary action and fine any of them who are found to have breached club rules during our stay in Portugal.
"Despite reports to the contrary, the spirit amongst the lads is very good, with everyone looking forward to the game against Barcelona on Wednesday.
"We remain totally focused on what will be a very tough game against the defending European Champions."
First published on bbc website|
Liverpool are preparing to play Barcelona in the Champions League