Washington , Aug 2 (ANI): Fearing that it would leak intelligence reports to extremists operating from its tribal areas, the US has for the past four months not shared information with Pakistan prior to carrying out air strikes on areas lying in Pakistan territory targeting al Qaeda and Taliban suspects.

The revelation on the Bush administrations toughening stance on its long-time ally in the war against Islamic extremism came as Pakistani officials angrily denied a newspaper report that its intelligence service helped plan the July 7 bombing of India ‘’s embassy in Kabul that killed at least 41 people.

The US daily New York Times recently reported that American intelligence agencies had concluded that members of the ISI were involved in the July 7 attack in the Afghan capital. Citing unnamed US government officials, the report was based on intercepted communications between Pakistani intelligence officers and militants who carried out the attack.

Quoting a high-level European defence official in Islamabad , a CBS report said that the Bush administration was demanding a comprehensive revamp of Pakistan s powerful counter-espionage agency, the Inter-Services Intelligence (ISI), before Washington will resume full intelligence cooperation with its valuable Asian ally.

In the latest secret operation which was not shared with Pakistani intelligence, Midhat Mursi al-Sayid Umar, also known as Abu Khabab al-Masri - a leading al Qaeda chemical and biological weapons expert, was killed in a US missile strike early on Monday morning at a remote location in Pakistan s Waziristan region bordering Afghanistan .

Information of this attack was shared very late with Pakistan . This was a case where the U.S. did not want to alert the Pakistanis in advance because of concerns over information leaks, said the European official, whose country has contributed troops to the NATO coalition force in Afghanistan .

The official declined to reveal his identity due to the sensitivity of the information, added the report. (ANI)