The U.N. relief agency for Palestinian refugees has condemned "in the strongest possible terms" the killing of four children the previous day in an Israeli airstrike on Gaza.
UNRWA says the children - two siblings and two cousins - were killed near the refugee camp of Beit Hanoun. It says they were under the age of 12 and went to schools in the territory sponsored by the agency.
Wednesday's statement says: "Our hearts go out to their families and friends in communities that have been so cruelly affected by this latest escalation."