Five persons were killed and several other injured as the suicide attackers hit a checkpost near PIA building in Sadar area of Peshawar, a private TV reported on Thursday. A suicide bomber targeted a security checkpoint in Peshawar on Thursday, killing four people in the second such attack in as many days in the flashpoint northwestern city. The injured were being shifted to Lady Reading and CMH hospitals where many are pronounced to be in a critical condition and rise in the toll is also feared. The bomber targeted a checkpoint in the army cantonment, blowing himself up on one of Peshawar's busiest areas. "The suicide bomber was trying to cross the checkpoint. He was on foot. Police stopped him and he blew himself up," Mohammad Karim Khan, a senior police officer, told AFP. "There is one policeman and three passers-by among the dead," he added. Administration officials said more than 10 people were wounded and witnesses said they saw injured people lying bloodied on the ground under a thick cloud of smoke that spewed into the sky after the blast. Bashir Ahmed Bilour, a cabinet minister in the North West Frontier Province government, confirmed the death toll from the suicide attack. "We will never bow down to them, we will continue our fight till this curse is completely eliminated," he told reporters. NWFP Information Minister Mian Ifthkhar Hussain said that the government is making efforts to eliminate terrorism as per its resources. Mentioning the worsening security situation in Peshawar, the minister expressed the fear that the terrorists could also target the Muharram processions.