WASHINGTON - A US drone-fired missile in Pakistan killed one of Al-Qaeda leader Osama bin Ladens son this year, US officials claim. Citing a senior US counter-terrorism official, National Public Radio said US spy agencies were 80 to 85 percent sure that Saad bin Laden was killed by hellfire missiles fired from a drone sometime this year. However, Saads death could not be confirmed through DNA testing, without the body, the official was quoted as saying. Saad bin Laden, said to be in his late 20s, was not a major player in the Al-Qaeda network guided by his father and happened to be in the wrong place at the wrong time, the official said. We make a big deal out of him because of his last name, the official added. Former National Intelligence Director Mike McConnell said the son of the Al-Qaeda terrorist group leader spent several years under house arrest in Iran before travelling last year to Pakistan. Monitoring Desk adds: Until recently Washington used to say that bin Laden was suspected of having sought refuge in the area of the mountainous Afghan-Pakistani border after escaping from US-led forces in eastern Afghanistan in 2001. But now the US officials have pinpointed Pakistan, reported Telegraph on Thursday. At a news conference recently, Secretary of State Hillary Clinton said Washington has given the Pakistani government information about where it believes al-Qaeda leaders are located on its soil. With respect to the location of those who were part of the planning and execution of the attack of 9/11 against our country, we firmly believe that a significant number of them are in the border area of Pakistan, she said. However, Rehman Malik, Pakistans interior minister, has claimed bin Laden is hiding in the Afghan province of Kunar across the border from Bajaur where Pakistani troops have been battling militants. The CIA has set up a listening post in the northern area of Chitral, north of Bajaur, and rumours persist that he may be moving among the Chitrali valleys inhabited by animist non-Muslim Kalash people. A recording of a speech reportedly made by bin Laden was broadcast on the eve of President Barack Obamas speech in Cairo last month. In a rare public speech last month, CIA Director Leon Panetta defended US Predator attacks on Pakistani soil as precise and limited in terms of collateral damage. And very frankly, he said, its the only game in town in terms of confronting and trying to disrupt the al-Qaida leadership, he said, bin Ladens deputy, Ayman al-Zawahiri, has attempted to halt al-Qaedas plunging popularity in Pakistan by exploiting widely held fears that the US is plotting to seize the countrys nuclear bombs. In an audio message released several weeks ago Zawahiri warned Pakistanis that the US was striving to break up this nuclear-capable country and transform it into tiny fragments, loyal to and dependent on the neo-crusaders.