The government has decided to impose curfew in sensitive areas here in the city in the wake of ongoing violence spree which has claimed at least 30 lives in three days. According to a private television channel, the decision was taken at a high level meeting chaired by Chief Minister Syed Qaim Ali Shah and also attended by Federal Interior Minister Rehman Malik and heads of security agencies to review law and order situation. It was decided that the curfew would be imposed in parts of Gulistan-e-Jauhar and Orangi Town and a joint search operation be conducted by police and Rangers in the violence-hit areas. Talking to newsmen at Quaid-e-Azam International airport Karachi before his departure, Malik once again claimed that a third power was behind unrest in Karachi. A third force is involved in killing incidents in Karachi trying to ignite lawlessness in the city. The killers are getting line from somewhere, he said. Few forces are hatching conspiracy to trigger clash between Pakistan Peoples Party, Muttahida Qaumi Movement and the Awami National Party but they will not succeed, he said. Praising the 'performance of Karachi police, the minister said few of target killers had been apprehended by the law enforcers. Malik, who had arrived in Karachi to help efforts to end the unrest, further said the government would not allow anyone to destroy the citys peace and that motives behind these killings were being evaluated. The death toll in targeted killings and armed attacks in the city rose to 30 in three days.