Police fear a racist  package bomber could be on the loose after a second African-American person was killed by an exploding package in two weeks.

The 17 year-old boy died after picking up a piece of mail from the front doorstep of his home in Austin, Texas Monday, and bringing it into his kitchen, where it exploded.

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That blast also injured a woman present in the house – and police now say they believe the tragedy is linked to a similar blast that killed Anthony Stephan House in a nearby neighborhood ten days ago.

And bomb disposal experts were called off the scene of…