Gunfire erupted at the Gaza-Egypt border on Monday, following stone-throwing clashes between Egyptian border guards and Palestinians, witnesses said. Five people were wounded by gunfire, said a Gaza health official, Dr. Moawiya Hassanain. The tensions began when the Egyptian guards sealed the border hermetically Monday, not even allowing Egyptians and Gazans who had found themselves on the wrong side of the border to return home. At some point, dozens of teens threw stones at an Egyptian command post in the area. Egyptian forces fired tear gas, and medics said 12 people were treated for tear gas inhalation.