M: "So it was the mine found by the UN action team or the Guardian?" It was found independently by both. You have no reason to suspect that either party had been aware of the movements of the other. M: "And if it was The Guardian, I thought international media had been banned from Gaza by Israel?" If the Guardian already had someone in Gaza before the ban was imposed then Israel isn't going to do INTO Gaza and tell him to leave, is it? M: "Or wait, was it the UN team that reported it?" Why would the UN MAG have known (much less cared) that a reporter for a British newspaper had ALREADY entered the building and had ALREADY noted the presence of that bomb? M: "I assume it is not exclusively Palestinian, right?" Bomb disposal is exceptionally specialized, and the UN MAG's are almost invariably NATO people on secondment.
15 police officers killed in Colombia helicopter crash (Reuters)
from the article: Report: UN evidence counters Israel's account of Gaza war