The Maglan unit had sent in sniffing dogs and a small robot into the building as a precaution, and a small robot to minimize damage to the clinic, prior to detonating the charge that would destroy the tunnel whose entrance was found inside the building. But the building was lined with explosives which detonated bringing the building down on the solders. Two explosive devices were detonated against the soldiers, one from within the tunnel and a second one that was concealed within the clinic.
The United Nations Relief and Works Agency (UNRWA) facilities have become death traps in Gaza, with three of the agency’s schools proven to be weapons storage facilities for Hamas and allied terrorists.
Don't however expect to hear a peep out of the UN or the MSM about the use of UNRWA building for terrror.