ISLAMABAD, MARCH 22, SPA -- At least four persons were killed and over two dozen others wounded in violence and shooting incidents followed by mortar shells and rocket attack in Hangu (North West Frontier Province or NWFP), officials said. The administration immediately imposed curfew for an indefinite period in Hangu to control the violence and bring about peace. Officials said a bank watchman, a police official, a woman and another person were killed during the sporadic violence. Eyewitnesses said miscreants targeted a place where a function was being held with mortar shells and rockets. The attack led to firing from both sides.--SPA www.spa.gov.sa/538762