A senior al-Qaeda leader in Afghanistan, Abu Laith al-Libi, has been killed, senior Western counter-terrorism officials say.
News of Libi's death first emerged on a website used by Islamist groups. The website, ekhlaas.org, said Libi had "fallen as a martyr", the Reuters news agency reports.
US intelligence agencies have been investigating reports that a top al-Qaeda figure was killed in the Afghan-Pakistan border area this week. It follows a missile attack in Pakistan's North Waziristan area in which 12 militants were reported killed.
While Western counter-terrorism officials told the BBC they believed Libi to be dead, they would not discuss how he was killed.
Libi has appeared in a number of al-Qaeda videos. He is reported to be one of al-Qaeda's most senior field commanders in Afghanistan. Reports say he was also active across the border in the Waziristan region of Pakistan.
The Jawa Report