In Pakistan, at least 28 people were killed and over 40 injured today in a suicide attack in a market in the northwest restive Malakand area.According to reports, the suicide attacker blew himself up near a security forces vehicle in the main market at Alpurai in Shangla district. The attack occurred near a police station. The army had launched a major operation against the Taliban in Malakand division, which includes the troubled Swat valley, in May. The army claims it has killed over 2,000 militants in the region so far.Today's suicide bombing was the latest in a deadly wave of militant attacks across Pakistan. A suicide attacker struck the UN food agency's office in Islamabad last week, killing five persons while over 50 had died in a suicide car bombing in Peshawar a few days later.Eight soldiers and nine terrorists were killed over the weekend when a group of heavily-armed militants attempted to storm Pakistan army's General Headquarters in Rawalpindi.The terrorists also took some 50 hostages, who were rescued in an operation carried out by army commandos.