After an MSF compound in Adé in the east of Chad on the border to Sudan had been robbed by armed assailants on the night of August 4, 2009, one international and one national staff member were reported missing. While the Chadian colleague returned safely on Friday, MSF is deeply concerned that one international staff member is still missing. MSF has received confirmation from different sources in Chad and Sudan that the missing colleague is held by an unknown armed group. The information received is that the aid worker is in good health and treated well. ?MSF is in contact with the family of the staff member and with all relevant local, national and international authorities. MSF is doing everything in its power to ensure a safe return of our colleague. In the interest of the safe resolution of this incident we are currently not in a position to provide further information.