ISLAMABAD, June 9 (Reuters) - Pakistan on Saturday rejected U.S. Secretary of Defense Leon Panetta's recent comments on militant safe havens in Pakistan, a move that could intensify tensions between troubled allies Islamabad and Washington.

"We feel that the Secretary of Defense is oversimplifying some of the very complex issues we are all dealing with in our efforts against extremism and terrorism," Pakistan's Foreign Ministry said in a statement.

Panetta said on Thursday that stabilisation efforts in Afghanistan would remain difficult as long as militants had safe havens in Pakistan. (Writing by Qasim Nauman; Editing by Daniel Magnowski)

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  • U.S. Defense Secretary Leon Panetta, center, arrives at Kabul International Airport in Kabul, Afghanistan Thursday, June 7, 2012. (AP Photo/Jim Watson, Pool)

  • U.S. Defense Secretary Leon Panetta walks off his plane as he arrives at Kabul International Airport in Kabul, Afghanistan Thursday, June 7, 2012. (AP Photo/Jim Watson, Pool)

  • U.S. Defense Secretary Leon Panetta, center right, speaks with U.S. Ambassador to Afghanistan Ryan Crocker, second right, and the head of NATO coalition forces in Afghanistan Gen. (AP Photo/Jim Watson, Pool)

  • U.S. Defense Secretary Leon Panetta, right, speaks with U.S. Ambassador to Afghanistan Ryan Crocker, center, and the head of NATO coalition forces in Afghanistan Gen. (AP Photo/Jim Watson, Pool)

  • U.S. Secretary of Defense Leon Panetta gestures while speaking during a press conference in New Delhi, India, on Wednesday, June 6, 2012. (AP Photo/Jim Watson, Pool)

  • U.S. Secretary of Defense Leon Panetta delivers a speech on Indo-U.S. Defense Relations at the Institute for Defense Studies and Analysis in New Delhi, India, Wednesday, June 6, 2012. (AP Photo/Jim Watson, Pool)

  • U.S. Defense Secretary Leon Panetta, second left, participates in a welcoming ceremony at the Ministry of Defense in New Delhi, India Wednesday, June 6, 2012. (AP Photo/Jim Watson, Pool)

  • U.S. Defense Secretary Leon Panetta pays tribute at the India Gate war memorial monument, in New Delhi, India, Wednesday, June 6, 2012. (AP Photo/Mustafa Quraishi)

  • U.S. Defense Secretary Leon Panetta, center, inspects Indian troops during a welcoming ceremony at the Ministry of Defense in New Delhi, India Wednesday, June 6, 2012. (AP Photo/Jim Watson, Pool)

  • U.S. Secretary of Defense Leon Panetta walks off his plane upon his arrival in New Delhi, India, Tuesday, June 5, 2012. (AP Photo/Jim Watson, Pool)