http://www.haaretz.com/hasen/spages/549106.html
Ran Reznick and Ruth Sinai
"The Immigration Police has begun using a medical examination to determine the age of detainees it wants to deport - an X-ray of the bones of their wrist, to determine the age of foreign detainees who claim they are minors and therefore cannot be deported. According to international law and certain international charters to which Israel is a signatory, it is forbidden to deport minors."