ISLAMABAD - At least 89 people were killed and 90 others injured in 12 drone strikes inside Pakistan during March 2011. These figures were reported by the Conflict Monitoring Centre, an Islamabad-based independent research centre, which monitors the drone attacks and anti-state insurgencies. More than half of those killed and 80 out of 90 injured were civilians, the report said. Report further indicated that no drone attack had been reported since killings of 45 civilians on March 17, when a missile hit a peace jirga in Datta Khel area of North Waziristan. Ten out of twelve attacks targeted North Waziristan while South Waziristan witnessed two drone attacks in the month. The frequency of drone attacks was intensified from March 8 to 17. In these ten days, CIA carried out 12 drone attacks which was more than total attacks in the month of January this year, when 49 people were killed in 11 drone attacks, report suggested. It is not clear whether the intensification was aimed to pressurise Pakistan for the release of CIAs alleged spy, Raymond Davis, or there were some other motives behind it. Davis was behind the bars for killing two Pakistanis in Lahore. The US claimed that Davis was a diplomat so deserved diplomatic immunity, however, it could not prove the claim in the court of law and blood money was paid to get Raymond Davis released. The CIA struck twice on March 16, the day when Davis was released. Moreover, the very next day, another drone attack killed 45 and injured 80 innocent civilians when a tribal peace meeting (Jirga) came under the attack. High number of civilian casualties in the attack prompted severe reaction in Pakistan. At the national level, it was taken as the American arrogance. The government came under immense public pressure. Chief of Army Staff General Ashfaq Pervaiz Kayani for the first time publicly condemned the drone attacks and termed them unacceptable, the report said. US ambassador to Pakistan Cameron Munter was summoned to foreign office and strong protest was lodged. The ambassador had to travel to the US to convey Pakistans reservations. The tension was not restricted to the diplomatic level either. Pakistan reportedly put its Air Force on high alert as well as it also boycotted the trilateral security meeting in Brussels, which was due to be held at the end of March. The Punjab Assembly also passed a unanimous resolution against drone attacks while an adjournment motion was also moved in the National Assembly. Meanwhile, the Chief Minister Punjab on Sunday indicated for a long march against the drone strikes. After such a high-level reaction, no drone attack was reported after Jirga attack until the April 2, (when this report was completed). From 8th to 17th March, CIA carried out 12 attacks in 6 different days. On March 8 and 16, two attacks each day, on March 11 and 13, three attacks each day while March 14 and 17 saw one drone attack each day. None of the Taliban or Al-Qaeda commander was killed in these attacks, report said. Intelligence officials declared all those killed 'suspected militants as usual. However, civilian killings on March 17 exposed the credibility of these claims. The Conflict Monitoring Centre had already observed that the civilian casualties in drone attacks were deliberately overlooked by the security officials, it further added. During the first three months of this year, the CIA had carried out 27 drone attacks killing 159 people. During the same period in 2010, it had killed 222 people in 32 drone attacks. Since 2004, CIA had killed 2,211 people in 255 drone attacks in Pakistans tribal areas, the report added. The highest number of drone attacks and subsequent killings were reported in 2010, when 938 people were killed 132 drone attacks.