An Attempt to kill Pakistani President Asif Ali Zardari was foiled as eight plotters were arrested respectively in the country's capital Islamabad and Punjab province, reported local English TV channel Express on Saturday night.According to the report, the security forces first got informed about the plan by some terrorists to kill the Pakistani President on May 21 by intercepting a call and arrested four of them in Islamabad and another four in different areas of Punjab province on Saturday.Details about the plan and eight arrested terrorists are not available immediately at this point.Since the killing of the former al-Qaida chief Osama bin Laden by the U.S. forces in Pakistan's northwest city of Abbottabad on May 2, both Pakistan Taliban and al-Qaida vowed to avenge the death of bin Laden by threatening to launch attacks at the military, police and security forces as well as the top government officials in Pakistan.Pakistan Taliban have meant their words by launching a series of attacks across the country since then.Serious attacks launched by them included a twin suicide bomb attack at a training center of armed border forces in Pakistan's northwest city of Charsadda on May 13, in which 98 people were killed and more than 140 others injured; an attack on Pakistani naval air force in Karachi on May 22, in which over a dozen of security personnel were killed while two U.S.-made P3C Orion surveillance planes and one helicopter were destroyed; and a suicide car bomb attack in the country's northwest city of Hangu on May 26, during which 36 people were killed and over 50 others injured.The revenge target of the Pakistan Taliban is clear this time. Most of the targets hit by them are the army, police and the United States. On May 20, two employees of the U.S. consulate in Peshawar were hit by a road-side planted bomb, which killed one passerby and injured several others apart from the two U.S. diplomats.