1.   In Plaza Bolivar, police sharpshooters scanned the crowd while other officers set up roadblocks and frisked pedestrians.

2.   Security was stepped up soon after the explosion, with soldiers frisking pedestrians and searching vehicles.

3.   Soldiers frisked pedestrians and checked vehicles on main roads.

4.   The government asked Parliament Monday for new anti-terrorism powers to allow police to stop and frisk pedestrians, search unaccompanied cargoes at ports and to search non-residential premises.