Pakistani policemen examine evidence by a bomb blast location happening a betting building happening Karachi on April 21, 2011.Islamabad, Pakistan next to smallest amount 15 live in were killed and 40 others wounded as a bomb exploded here a gaming guild here Karachi, Pakistan, officials understood Thursday.Raja Umar Khitab, a senior control certified featuring in Karachi, believed the bomb was placed under a record by the private club and consisted of by smallest amount 2 kg around 4.5 pounds of explosive material. The blast made a basin by the side of the position, he added.The explosion happened featuring in the docks citys Ghass Mandi section, regulate spokesman Muhammad Saleem thought.