The nationwide day of mourning being observed with protest demonstrations against suicide attacks at Data Darbar here. Security stepped up on Saturday ahead of the prime minister's visit of Ganga Ram Hospital in Lahore to inquire about the health of the people injured in attacks. In Lahore a mob of baton wielding men forced closure of shops and lawyers chambers. People observed funeral prayers in absentia of the victims of Lahore bombing at main M.A. Jinnah Road in Karachi. Angry protesters during a demonstration at Mall and Turner Road in Lahore suspended traffic by creating hurdles at roads. Angry protesters forcefully closed shops and lawyers chambers. Police dispersed demonstrators and arrested six persons.