<P> Pressure cooker bombs have been used in a number of attacks in the 21st century . Among them have been the 2006 Mumbai train bombings , 2010 Stockholm bombings ( failed to explode ) , the 2010 Times Square car bombing attempt ( failed to explode ) , the 2013 Boston Marathon bombing , and the 2017 Manchester Arena bombing . </P>
<P> Pressure cooker bombs have been used in a number of attacks in the 21st century . Among them have been the 2006 Mumbai train bombings , 2010 Stockholm bombings ( failed to explode ) , the 2010 Times Square car bombing attempt ( failed to explode ) , the 2013 Boston Marathon bombing , and the 2017 Manchester Arena bombing . </P>
what kind of bombs were used in boston
what kind of bombs were used in boston
Pressure cooker bombs
Pressure cooker bombs