ISLAMABAD, February 07, SPA -- Police say a bomb attack on a checkpoint in eastern Pakistan has killed seven police officers. District Police Chief Malik Tassadaq Hayyat says theattack came before dawn Saturday near the town of Mianwaliin eastern Punjab province. He says residents also heard gunfire before the explosionthat knocked down the roadside checkpoint, according to a report of Associated Press. Hayyat would not say who could be behind the attack butsaid it was «an act of terrorism» and officers were stillinvestigating.--SPA www.spa.gov.sa/633279