The news agency , citing the Interior Ministry , said 97 people had been arrested since Monday night after rioting by `` criminal groups '' in the capital . ` Dawn-to-dusk curfew follows unrest , torching of government offices . Government blames `` Salafis and persons with criminal records '' for the violence in Karachi. Uprising in Tunisia set off 2011 'Arab Spring '
Dawn-to-dusk curfew follows unrest , torching of government offices . Government blames `` Salafis and persons with criminal records '' for the violence in Karachi. Uprising in Tunisia set off 2011 'Arab Spring '