ISLAMABAD , Pakistan ( CNN ) -- Two explosions have struck a small cafe in volatile northwestern Pakistan , killing six people , including two police officers , local police and an official said . A paramedic treats a victim of a suicide blast at a hospital in Dera Ismail Khan on Sunday . The attack happened Sunday evening in the town of Dera Ismail Khan in Pakistan 's North West Frontier Province , a frequent scene of suicide attacks . No one was killed in the first blast , which happened at a cafe near a local college , said Haji Abdul Rauf , the town 's mayor . Four residents and two police officers were killed and 20 others injured when a suicide bomber struck 10 minutes later , Rauf said . The attackers were targeting police by attracting a crowd with the first blast , the mayor said . A local journalist said two of the civilians killed were reporters who had arrived after the first explosion . Pakistan 's forces have been battling Taliban and al Qaeda militants in the North West Frontier Province and the Federally Administered Tribal Areas . Some of the Taliban militants conducting attacks in neighboring Afghanistan have been based in the North West Frontier Province and nearby tribal regions . The resurgence of the Taliban has prompted U.S. commanders and the incoming Barack Obama administration to put more of a focus on confronting militants along the border . The attack on Sunday came one week after a suicide car bomber -- apparently targeting people voting to fill a national assembly seat -- killed at least 37 people and wounded 16 others in the Bunair district of North West Frontier Province . In November , a suicide bomber detonated his explosives in the midst of a funeral procession in Dera Ismail Khan , killing at least seven people and injuring 30 more , police said . Days earlier , a suicide bomber struck a mosque during evening prayers in the Bajaur region of the North West Frontier Province , killing seven people . Journalist Janullah Hashimzada in Peshawar , Pakistan , contributed to this report .
Suicide bomber kills six people after early death in crowd . It happened in Pakistan 's volatile North West Frontier Province . Four residents and two police officers were killed , and five others injured . Pakistan has been battling Taliban and al Qaeda militants in the province .