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The brother and the mother of Avraham Mengistu, 29, an Israeli of Ethiopian descent who is reportedly held captive in the Gaza Strip, gives a press conference in the southern city of Ashkelon on July 9, 2015, calling on Hamas to release his brother and the Israeli government to work toward his safe return. Two Israelis are being held captive in the Gaza Strip, including one detained by Hamas after crossing into the territory last year, Israeli officials said, raising fears of another hostage crisis. AFP PHOTO / JACK GUEZ (Photo credit should read JACK GUEZ/AFP/Getty Images)

The brother and the mother of Avraham Mengistu, 29, an Israeli of Ethiopian descent who is reportedly held captive in the Gaza Strip, gives a press conference in the southern city of Ashkelon on July 9, 2015, calling on Hamas to release his brother and the Israeli government to work toward his safe return. Two Israelis are being held captive in the Gaza Strip, including one detained by Hamas after crossing into the territory last year, Israeli officials said, raising fears of another hostage crisis.   AFP PHOTO / JACK GUEZ        (Photo credit should read JACK GUEZ/AFP/Getty Images)