Israeli troops on Saturday killed at least three Palestinians belonging to Hamas group who were presumed to be en route to carrying out an attack, throwing a shaky truce along the Gaza-Israel border further into question, the Associated Press reported. The border clash came just a day after Palestinian President Mahmoud Abbas held rare talks in Cairo with Hamas' supreme leader in exile, Khaled Mashaal, to find ways of rescuing the cease-fire. The attempted attack was seen as a snub of both Abbas and Egyptian mediators. In Saturday's incident, four armed Palestinians tried to plant a bomb near the Gaza-Israel border and were killed by Israeli troops, the Israeli military said. Palestinian medics said they found three bodies in the area and that a fourth person was seriously wounded. Hamas said the three dead were members of its military wing.