- Austin explosions: ‘Serial bomber’ hunted after tripwire sets off 4th blastNBCNews.com
- Investigators Say Austin ‘Serial Bomber’ May Have Used Tripwire In Latest BlastNPR
- 4th blast in Austin leads police to believe a ‘serial bomber’ is on the looseCNN
- ‘Serial Bomber’ Is Suspected in Explosions That Have Put Austin on EdgeNew York Times
- Officials confirm latest Austin bombing was triggered by tripwireABC News