The head of a money-transfer service that the United States accuses of diverting money to Osama bin Laden's al-Qaida network has surrendered to Canadian police.

Canada has issued an arrest warrant for the head of a money transfer service it's claimed helped finance terrorism.

The Bush administration cracked down on Osama bin Laden’s multimillion-dollar financial networks at home and abroad, closing businesses in four states, detaining US suspects and urging allies to help choke off money supplies in 40 nations.