England youngsters Phil Foden and Mason Greenwood will not travel with the squad to Denmark today after footage emerged of the pair bringing girls back to the team hotel in Iceland.
The pair made their senior international debuts in the win over Iceland on Saturday - but those accomplishments have now been overshadowed.
Their conduct in bringing girls back has contravened the FA's behavioural rules for players whilst on international duty.
Manchester City midfielder Foden started for Gareth Southgate's side against Iceland on Saturday night, making his senior international debut, while Manchester United striker Greenwood came off the bench to achieve the same accolade.
"I think at the moment I'm trying to take a lot of information in," Southgate said at Monday's press conference.
"Obviously they have been naive, we have dealt with it appropriately. I recognise their age but the whole world is dealing with this pandemic.
"I'm a father with children, young adults, I know people get things wrong. I'm not excusing that in this instance.
"These are two boys I don't know particularly well at the moment so can't speak in great depth. I have got to try and speak with them later in the appropriate way. They have got responsibilities and they have apologised.
"This is a job like no other in terms of the things you have to deal with. In terms of what is expected, the players who have been with us a longer time know exactly what is expected - whenever people have stepped across that line we have dealt with it appropriately.
"The two boys are going to find themselves in a position where there will be lots of judgement of them from afar.
"They understand they have got this wrong. Our job is to get on with the game."
Southgate added: "Nothing has happened in the areas we occupy in the hotel. We are still getting the depths of the information. Still getting to grips with the detail. We have spent such a long time getting measures in place and the whole squad followed that to the letter.
"I'm not going into any more details until I'm clear of everything. No-one from outside the hotel has been into the areas we occupy."
