Brad and Angelina in Balkans plea

Celebrity couple Angelina Jolie and Brad Pitt made a surprise visit to Bosnia to highlight the plight of refugees still unable to return home 15 years after the war there ended.

The pair arrived last night and managed to successfully hide from media.

Part of their private visit will be devoted to long-term displaced people, said a spokeswoman for the United Nations High Commissioner for Refugees in Sarajevo.

Jolie has been a UNHC Ambassador since 2001 and will visit some of the projects of the agency that deals with the 117,000 refugees in Bosnia whose homes were destroyed or lack adequate infrastructure in their villages.