( CNN ) -- Two aid workers for Medecins Sans Frontieres , also known as Doctors Without Borders , have been released from captivity in Kenya , the organization said Thursday . Montserrat Serra and Blanca Thiebaut are safe and healthy , the group said in a written statement , adding that it is working to return the two Spanish women to their homes . They were abducted from the Dadaab refugee camp in Kenya -- one of the world 's largest refugee complexes -- on October 13 , 2011 . Their driver was shot in the neck and taken to a hospital in stable condition . At the time of their kidnapping , Serrat , of Girona , was 40 , and Thiebaut , of Madrid , was 30 , the group said . As a result of the attack in which they were abducted , the MSF had to stop some crucial medical activities , the group said at the time .
Two aid workers with Doctors Without Borders have been freed , the group says . They were kidnapped in December 2011 . The kidnapping came during an attack at one of the world 's largest refugee camps .