Eight Seven Americans working for the CIA have died in a bomb attack in Afghanistan, the worst against US intelligence officials since 2001.

A bomber wearing an explosive vest entered Forward Operating Base Chapman in Khost Province, near Pakistan.

A Taliban spokesman said one of its members who was working for the Afghan army carried out the attack.

http://news.bbc.co.uk/2/hi/south_asia/8435502.stm

Update:

interesting piece from the LA Times with more background info

http://www.latimes.com/news/nationworld/world/la-fg-afghan-base-attack1-2010jan01,0,6436365.story