keywords: kidnappers zarqawi hostages baghdad militants
text: Kidnappers threaten to turn over CARE chief to Zarqawi #39;s group Baghdad, Nov 03 - The kidnappers of aid worker Margaret Hassan threatened to turn her over to al-Qaida-linked militants notorious for beheading hostages unless Britain agreed within 48 hours to pull its troops from Iraq, Al-Jazeera television reported.