<p>Palestinian health officials say six Palestinians were killed by Israeli army fire in the West Bank on Friday.</p>.<p>The officials say five were killed in stone-throwing clashes with Israeli forces in several locations, and a sixth was killed during an attempt to stab an Israeli soldier.</p>.<p>The West Bank violence comes as Israel unleashed a heavy barrage of tank fire and airstrikes on the Gaza Strip on Friday. Israel said it was clearing a network of militant tunnels ahead of a possible ground invasion.</p>
<p>Palestinian health officials say six Palestinians were killed by Israeli army fire in the West Bank on Friday.</p>.<p>The officials say five were killed in stone-throwing clashes with Israeli forces in several locations, and a sixth was killed during an attempt to stab an Israeli soldier.</p>.<p>The West Bank violence comes as Israel unleashed a heavy barrage of tank fire and airstrikes on the Gaza Strip on Friday. Israel said it was clearing a network of militant tunnels ahead of a possible ground invasion.</p>