ISLAMABAD (Online) - The intelligence agencies have warned the federal and provincial governments that extremists are planning a massive attack similar to those carried out on Jinnah Hospital Lahore and City Courts Karachi to secure release of their colleagues. Sources have informed Online that all provincial governments and other concerned agencies have been warned to ensure security because the terrorists were planning a massive attack on important personalities and sites after attack on Ahmadis. Their possible targets might be religious sites belonging to minorities as well as Parliament House. In this connection, it is learnt that the attacks would be a coordinated group activity possibly in Lahore, Rawalpindi, Islamabad, Karachi and Multan. The report also recommends that hearings of arrested terrorists would be held in the jail premises to ensure security.