Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. May 04, 2012 20 Killed in Pakistan Suicide Bomb Blast Authorities say suicide bomber detonated explosives Friday as he approached police checkpoint, near market in Khar, main town of Bajaur tribal district Officials say a suicide bomber in Pakistan's restive northwest tribal region, along the Afghan border, has killed 20 people and wounded at least 40. Five policemen are among the dead. Authorities say the bomber detonated his explosives Friday as he approached a police checkpoint, near a market in Khar, the main town of the Bajaur tribal district. Officials say no group has claimed responsibility for the attack, but the Pakistani Taliban has carried out similar attacks in the past. Some information for this report was provided by AP and AFP. .