Explosions at a suspected militant hideout in northwestern Pakistan near the Afghan border on Tuesday caused several casualties, the army said. Three missiles fired from Afghanistan destroyed a training facility in Pakistan, killing 17 militants and wounding 10 others, according to an intelligence official in North Waziristan. He spoke on condition of anonymity because he was not authorized to speak to media. But Pakistan army spokesman Maj. Gen. Waheed Arshad claimed that the explosions were caused when bombs militants were making at an isolated compound exploded accidentally. "The blast happened when these militants were making bombs, and there were several casualties," he said.