EL-ARISH, Egypt (AP) — At least three Egyptian troops died when a smuggling tunnel on the border with the Gaza Strip collapsed on them as they were investigating it on Saturday, a military official said.

Rescuers recovered the bodies of an officer and two soldiers, and were looking for a fourth body in the rubble. Another soldier was injured in the collapse, said the official, who spoke on condition of anonymity because he was not authorized to brief journalists.