International warplanes have bombed a gathering of Taliban on the southern border with Pakistan and killed up to 70, an Afghan government official said on Wednesday. The North Atlantic Treaty Organisation (NATO) International Security Assistance Force (ISAF) confirmed the strike but said it was late Sunday, not as reported on Monday, and killed a "small group of Taliban commanders".Intelligence reports had indicated that militants, including Arabs and Pakistanis, had gathered in Barham Chah in southern Helmand, provincial government spokesman Daud Ahmadi told AFP. The men were being watched by international troops who then sent in aircraft, he said. "The foreign forces bombed the Taliban gathering in Barham Chah and killed up to 70 Taliban," Ahmadi said. "After positively identifying these insurgents, the ISAF attacked them with precision air strikes, killing the insurgents and destroying two of their vehicles," the force said in a statement.