Dutch defender Khalid Boulahrouz suffered the tragic loss of Anissa, his prematurely born baby daughter on Thursday, the Dutch Football Federation (KNVB) announced.

"We are in shock, and appalled," read a short text from the KNVB sent to Dutch journalists and seen by AFP.

Dutch coach Marco van Basten said that all the group's thoughts were with Boulahrouz.

"Khalid is experiencing a dreadful time and we will do all we can to support him," said Van Basten, who added that Boulahrouz would stay with the squad. "Khalid reacted like an adult. He wanted the squad to focus on the quarter-final with Russia," added Van Basten, referring to Saturday's quarter-final.

Boulahrouz, 26, had cut short training suddenly on Wednesday to rush to the Lausanne hospital where Sadia, his five months pregnant wife, had been admitted over problems to do with her pregnancy.

He has been given permission to leave the team hotel in order to stay with his wife and organise the funeral arrangements. Some of his team-mates also went to the hospital to support him and his wife.

"His family is not here, so we felt we should be there for him. Khalid is a very strong person. And he has reacted really well," said captain Edwin van der Sar.

The KNVB had reduced the usual media arrangements out of respect for the player and his wife, only van Basten and van der Sar would give a short press conference, whereas normally all the players are available.

Van Basten did not indicate whether the Sevilla defender - on loan from Chelsea - would continue to be involved in the tournament.