control of northern gaza after intense fighting. 50,000 palestinians fled to gaza city yesterday three evacuation routes after israel open a safe passage on the road to the south for several hours. meanwhile, a senior un official has accused both sides of committing war crimes. here is more from yolande knell. israel s vast military might on display once again. it says hamas has lost control of northern gaza and its troops are battling inside gaza city. this is a critical point in the war. and for the first time the bbc was given access behind israeli lines in gaza, escorted by soldiers. while the bbc had editorial control of the report, these pictures were cleared for use by the israeli military. i made it a huge disruption, officers showed what they said was a hamas weapons factory, set up below a family apartment. they insisted hamas, not israel, was responsible for civilian loss of life. we israel, was responsible for civilian loss of life- loss of life. we know intellig