[FILE - In this Dec. 8, 2015 file picture migrants, who were lost in an open sea, ask for help from members of the Frontex, European Border Protection Agency, from Portugal, as they try to approach in a dinghy the Greek island of Lesbos. The head of the European Union border control, agency Frontex, Fabrice Leggeri, said Saturday Dec. 17, 2016 that about 350,000 migrants arrived in the EU this year so far. (AP Photo/Santi Palacios)]BERLIN (AP) — The head of the European Union border control agency says that about 350,000 migrants have arrived in the EU so far this year.