07/03/2008 05:12 am ET Updated May 25, 2011

Female, Teen Suicide Bombers Increasingly Used By Terrorists

A new joint security alert from the Department of Homeland Security and the FBI warns that terrorists are increasingly turning to women and teenagers to carry out suicide bombings.

The bulletin, obtained by CBS News, says "Female suicide bombers conducted more than twice as many attacks in Iraq in the first six months of 2008 than in all of 2007". Already this year at least 20 female martyrs have been linked to attacks including the June bombing of a government building in Baquba that killed 16 and injured 40 others.

Read more on CBS News