Austin explosion may have been triggered by tripwire, police say

  1. Austin explosion may have been triggered by tripwire, police say  CNN
  2. Texas explosions: New Austin blast ‘may be tripwire-activated’  BBC News
  3. Austin on edge after explosion leaves 2 injured; cause of blast unclear  Fox News
  4. Fourth explosion this month injures two; this time in Southwest Austin  Austin American-Statesman
  5. Fourth Austin package explosion this month possibly detonated by trip wire, leaving 2 injured, police say  Washington Post
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