Deaths rise in Israeli air strikes on Gaza

Up to 20 people have been killed in the deadliest night of Israeli air raids on Gaza since its current offensive began, Palestinian sources say.

Most occurred in attacks on a house and a cafe in the south, they say.

Militants in Gaza continued firing rockets into Israel on Thursday, with sirens sounding over southern towns.

UN Secretary General Ban Ki-moon warned the situation in Gaza was “on a knife-edge”, urging Israel and Palestinian militants to end hostilities.