ISLAMABAD (Agencies) Pakistan on Monday expressed serious concern to a visiting top US diplomat over the recent militant incursions from across the border with Afghanistan that led to loss of innocent lives. Pakistan said that armed militants made at least four incursions into Pakistani territory, attacking checkposts and villages and killing soldiers and civilians. Pakistani Deputy Foreign Minister Hina Rabbani Khar, while talking to US Deputy Special Representative Frank Ruggiero, underscored the need for effective measures to prevent such incursions, the Foreign Ministry said. The Afghan process of peace and reconciliation was discussed and Frank Ruggiero underscored the importance of the Core Group comprising Afghanistan, Pakistan and the US in the Afghan-led and Afghan-owned process of reconciliation and peace. The minister underscored the importance of clarity and strategic coherence as well as transparency to facilitate the Afghan people and the Afghan government in the process for peace and reconciliation. It was agreed that the Pakistan-US relations were on track and that enhanced interaction between the two sides at several levels greatly facilitated better understanding of each others point of view. Pakistan summoned Afghan envoys on two occasions and a strong protest was launched over a recent incursion of militants into its territory. Pakistani officials said it is the fourth incursion of militants into its territory from Afghanistan within a month. The previous intrusions took place in Upper Dir, South Waziristan and Kurram Agency. Pakistan also raised the issue with Afghan President Hamid Karzai, who travelled to Pakistan on June 10 to 11. Karzai said it is the responsibility of his government to stop attacks if it happens from Afghan soil. Ruggiro arrived in Islamabad on Monday as part of efforts to defuse tension with Pakistan and revive the strategic dialogue. Preparatory work is underway for the strategic dialogue. Dates have not been fixed yet, an official said. However, he said final dates were expected to be finalised during Ruggiros visit. The official also insisted that the scope of the strategic dialogue was not being narrowed down as reported by some section of the press. Unlike the previous talks, the forthcoming strategic dialogue is expected only to focus on counter-terrorism, economy, energy and market access. However, some sources say the talks are unlikely to take place anytime soon because of the overall relationships between the two countries. About the latest Nato incursion, Pakistan said Nato aircraft attacked one of its military posts in the northwest near the Afghan border. The Foreign Ministry said Nato aircraft intruded around 2.5km inside Pakistani territory and attacked a military post, Reuters reports. Its statement said Pakistan had conveyed its serious concern to the US embassy as well. A joint inquiry of the incident has also been requested, it said. Local officials in Mohmand said it occurred early Friday and that a few bombs were dropped but no casualties were reported. TheNation Monitoring adds: Pakistani security forces are not warning militants of upcoming US raids, an official told CNN Monday, angrily calling allegations in the New York Times inaccurate. The official also rejected claims by American lawmakers that intelligence agency the ISI has contacts with the Taliban and the Haqqani network. Its totally false, said the official, calling it a story that appears weekly in the media. The official, asking not to be named, was reacting to an article saying that militants had evacuated a bomb-making factory after US intelligence told Pakistani counterparts about it. The security forces issued a statement Friday denying that they were leaking intelligence to militants. This assertion is totally false and malicious and the facts on ground are contrary to it, Inter-Services Public Relations said. It said four compounds had been raided and people had been arrested. Two sites were found to be making bombs and were destroyed, while information on others proved to be incorrect. The Americans believed the sites were being used to stage attacks against US forces in Afghanistan. The targets appear to have been tipped off, the US official said.