Gaza conflict: UN says number of displaced almost doubles

The number of people in Gaza seeking sanctuary from the conflict with Israel nearly doubled on Friday, the UN says.

Relief workers in Gaza said there were now more than 40,000 people being protected in 34 UN shelters.

It comes after Israel sent troops and tanks into Gaza targeting Hamas militants who are firing rockets into southern Israel.

Prime Minister Benjamin Netanyahu warned of a "significant expansion" of the offensive.

BBC's Lyse Doucet and Quentin Sommerville report from Gaza and Israel.