Another Pallywood Hoax
It sounds like the Gaza beach incident (Read about it here and here at Honest Reporting). Palestinians get caught blaming their own violence on Israel again. Jerusalem Post, Gaza blast was premature bomb exploding:
"The explosion in a tunnel in Gaza overnight Thursday in which at least one Al-Aksa Martyrs Brigades operatives was killed and four trapped in the rubble was a result of a bomb exploding prematurely, the IDF reported on Friday morning.
Palestinian sources had earlier reported that five people had been killed when the IAF struck the tunnel near the border between Egypt and the Gaza Strip."