A US intelligence agency paid a 500,000-dollar bounty to Pakistan's military for the arrest of the Canadian son of a suspected Al-Qaeda financier, said court documents released Monday.  According to an October 2004 memo to the head of the Royal Canadian Mounted Police (RCMP) ordered released by Canada's federal court, Abdullah Khadr was wanted for "supporting insurgent activity in Pakistan and Afghanistan."  Thus, Khadr "is deemed to be a national security threat and has a 500,000 US dollar outstanding bounty for his capture," said the memo published on the website of the daily Globe and Mail, which fought for its disclosure.