Archaeologists have unearthed the identity tags of four children murdered by the Nazis at Sobibor death camp in eastern Poland. 

Each metal tag is different and was likely given to the children by their parents prior to being separated from them. The parents may have hoped the ID tags would help the children be returned home, according to Yoram Haimi, an archaeologist at the Israel Antiquities Authority, who is part of a team excavating the site.