Wembley chiefs had been monitoring the situation of the Manchester United teenage winger, who could have become available for England under residency rules in 2018.
Januzaj, born in Brussels to Kosovan-Albanian parents, had been mulling over his long-term options, aware of the gathering interest from the Football Association.
Roy Hodgson had attempted to stay clear of the debate, pointing out that it was not a matter for him unless the FA decided to alter its selection criteria.
But the decision was taken out of the hands of Hodgson or his successors last night as the 19-year-old Januzaj appeared to have finally thrown his hand in with the country of his birth.
Belgium coach Marc Wilmots broke the news on his Twitter feed as he announced: “I have received official confirmation that Adnan Januzaj wishes to play for the Belgian national team for the rest of his career!
“This is good news and I am delighted that such a talented player is available for selection for the Red Devils.”
Januzaj’s decision means he could be included in Wilmots’ World Cup 23, adding to the attacking talents at Belgium’s disposal, which include Eden Hazard, Romelu Lukaku, Kevin Mirallas and Kevin De Bruyne.
– Mirror Sport