TORONTO - The federal government is asking Canada's top court to take up the extradition case of Abdullah Khadr.

It says the Supreme Court should hear the case because it raises issues of national importance.

The Ottawa-born Khadr is wanted in the U.S. on terrorism related charges.

However, two courts in Ontario stayed the extradition on the basis the Americans had behaved shockingly in Khadr's detention and abuse in custody in Pakistan.

Khadr's lawyers argued self-incriminating statements he made were the product of torture in Pakistan in which the Americans had been complicit.

In May, Ontario's Court of Appeal upheld the extradition stay, siding with a lower court judge who said the fight against terrorism should not trump the rule of law.