2 injured after another package explosion in Austin, Texas
The explosion that injured two men Sunday night could've been triggered by a tripwire, said Austin Police Chief Brian Manley.
He said "it's very possible" that the device "was activated by someone either handling, kicking or coming into contact with a tripwire that activated the device."
The latest explosion comes less than a week after police said three package explosions that happened over 10 days were connected. Those explosions killed a man and a teenager, and injured two others.
The victims in those three explosions were African-American or Hispanic. Police have not yet discovered a motive, but have not ruled out the possibility the bombs could be hate crimes.