September : Death toll rises to 15 in two blasts , official says ; more than 100 injured . ` The problem is that this is part of a real wave of violence that is consuming Mexico . '' NEW : Mexican president says federal officials will help investigate . Explosions occurred during Independence day celebrations in Morelia .
September : Death toll rises to 15 in two blasts , official says ; more than 100 injured . NEW : Mexican president says federal officials will help investigate . Explosions occurred during Independence day celebrations in Morelia .