The Chelsea man left training on Wednesday to travel to the hospital to be with his wife, who was admitted after suffering complications with the pregnancy.
It is not known whether Boulahrouz will take part in any more games in Austria and Switzerland, and the Oranje have cancelled a press conference which had been scheduled for Thursday afternoon.
Copyright (c) PA Sport 2008, All Rights Reserved.
Do YOU want to write for GiveMeSport? Get started today by signing-up and submitting an article HERE: http://gms.to/writeforgms